Pull Microblaze updates from Michal Simek:
 - use asm-generic/io.h and fix intc/timer code
 - clean platform handling
 - enable some syscalls

* tag 'microblaze-3.15-rc1' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: Use asm-generic/io.h
  microblaze: Remove platform folder
  microblaze: Remove generic platform
  microblaze: Sort Kconfig options
  microblaze: Move DTS file to common location at boot/dts folder
  microblaze: Fix compilation failure because of release_thread
  microblaze: Fix sparse warning because of missing cpu.h header
  microblaze: Make timer driver endian aware
  microblaze: Make intc driver endian aware
  microblaze: Wire-up new system calls sched_setattr/getattr
  microblaze: Wire-up preadv/pwritev in syscall table
  microblaze: Enable pselect6 syscall
  microblaze: Drop architecture-specific declaration of early_printk
  microblaze: Rename global function heartbeat()

Using generic io.h will narrow down code duplication
in architecture io.h.

- define PCI_IOBASE
- remove non existing pci_io_base extern

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Warning log:
In file included from arch/microblaze/include/asm/thread_info.h:21:0,
                 from include/linux/thread_info.h:54,
                 from include/asm-generic/preempt.h:4,
                 from arch/microblaze/include/generated/asm/preempt.h:1,
                 from include/linux/preempt.h:18,
                 from include/linux/spinlock.h:50,
                 from include/linux/seqlock.h:35,
                 from include/linux/time.h:5,
                 from include/linux/stat.h:18,
                 from include/linux/sysfs.h:20,
                 from include/linux/kobject.h:21,
                 from include/linux/device.h:17,
                 from include/linux/node.h:17,
                 from include/linux/cpu.h:16,
                 from arch/microblaze/kernel/process.c:11:
arch/microblaze/include/asm/processor.h:125:20: warning: no previous prototype
for 'release_thread' [-Wmissing-prototypes]

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Pull timer updates from Ingo Molnar:
 "The main purpose is to fix a full dynticks bug related to
  virtualization, where steal time accounting appears to be zero in
  /proc/stat even after a few seconds of competing guests running busy
  loops in a same host CPU.  It's not a regression though as it was
  there since the beginning.

  The other commits are preparatory work to fix the bug and various
  cleanups"

* 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  arch: Remove stub cputime.h headers
  sched: Remove needless round trip nsecs <-> tick conversion of steal time
  cputime: Fix jiffies based cputime assumption on steal accounting
  cputime: Bring cputime -> nsecs conversion
  cputime: Default implementation of nsecs -> cputime conversion
  cputime: Fix nsecs_to_cputime() return type cast

Pull core locking updates from Ingo Molnar:
 "The biggest change is the MCS spinlock generalization changes from Tim
  Chen, Peter Zijlstra, Jason Low et al.  There's also lockdep
  fixes/enhancements from Oleg Nesterov, in particular a false negative
  fix related to lockdep_set_novalidate_class() usage"

* 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (22 commits)
  locking/mutex: Fix debug checks
  locking/mutexes: Add extra reschedule point
  locking/mutexes: Introduce cancelable MCS lock for adaptive spinning
  locking/mutexes: Unlock the mutex without the wait_lock
  locking/mutexes: Modify the way optimistic spinners are queued
  locking/mutexes: Return false if task need_resched() in mutex_can_spin_on_owner()
  locking: Move mcs_spinlock.h into kernel/locking/
  m68k: Skip futex_atomic_cmpxchg_inatomic() test
  futex: Allow architectures to skip futex_atomic_cmpxchg_inatomic() test
  Revert "sched/wait: Suppress Sparse 'variable shadowing' warning"
  lockdep: Change lockdep_set_novalidate_class() to use _and_name
  lockdep: Change mark_held_locks() to check hlock->check instead of lockdep_no_validate
  lockdep: Don't create the wrong dependency on hlock->check == 0
  lockdep: Make held_lock->check and "int check" argument bool
  locking/mcs: Allow architecture specific asm files to be used for contended case
  locking/mcs: Order the header files in Kbuild of each architecture in alphabetical order
  sched/wait: Suppress Sparse 'variable shadowing' warning
  hung_task/Documentation: Fix hung_task_warnings description
  locking/mcs: Allow architectures to hook in to contended paths
  locking/mcs: Micro-optimize the MCS code, add extra comments
  ...

Many architectures have a stub cputime.h that only include the default
cputime.h

Lets remove the useless headers, we only need to mention that we want
the default headers on the Kbuild files.

Cc: Archs <linux-arch@vger.kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>

Wire-up sched_setattr/getattr syscalls.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Enable this syscall and cleanup comments.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

miceroblaze:allmodconfig fails to build, complaining that
early_printk is redeclared.

include/linux/printk.h:114:6: error: static declaration of 'early_printk'
		follows non-static declaration
 void early_printk(const char *s, ...) { }
      ^
In file included from arch/microblaze/include/asm/page.h:19:0,
                 from arch/microblaze/include/asm/io.h:15,
                 from include/linux/io.h:22,
                 from kernel/irq/generic-chip.c:6:
arch/microblaze/include/asm/setup.h:22:6:
		note: previous declaration of 'early_printk' was here
 void early_printk(const char *fmt, ...);

This happens because CONFIG_EARLY_PRINTK is not enabled in this
configuration.

The architecture-specific declaration is not needed; drop it.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

microblaze:allmodconfig complains for some configurations that 'heartbeat'
is redefined as different kind of symbol. This is seen in test compiles
of watchdog drivers, which often use 'heartbeat' as ststic variable.

Since 'heartbeat' is an unfortunate name for a global function,
rename it to microblaze_heartbeat. Also rename the setup function
to microblaze_setup_heartbeat.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>