mm: cma: make mm/cma.h self-contained and conditionalize includes

mm/cma.h uses types from <linux/spinlock.h>, <linux/mutex.h>,
<linux/atomic.h> and <linux/list.h> without explicitly including them,
violating the kernel header self-containment guidelines.

<linux/debugfs.h> and <linux/kobject.h> are also included unconditionally
even though they are only needed under CONFIG_CMA_DEBUGFS and
CONFIG_CMA_SYSFS respectively.  Move the struct cma_kobject definition and
<linux/kobject.h> inside the CONFIG_CMA_SYSFS block, and move
<linux/debugfs.h> inside CONFIG_CMA_DEBUGFS.

Remove spurious trailing semicolons after the empty inline function bodies
in the CONFIG_CMA_SYSFS #else branch.

Add <linux/cma.h> so that MAX_CMA_AREAS and CMA_MAX_NAME are always
available when this header is included.

Link: https://lore.kernel.org/20260815103246.5315-1-eamon112009@gmail.com
Signed-off-by: Eamon Sippy <eamon112009@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Barry Song <baohua@kernel.org>

0 files changed, 0 insertions, 0 deletions