Review comments were incorporated to improve the driver.

1. Some data was eliminated that was not needed.
2. Renaming of variables for clarity.
3. Removed unneeded type casting.
4. Changed to use dev_err rather than other I/O.
5. Merged together some functions.
6. Added kerneldoc format to functions.

Signed-off-by: Sadanand <sadanan@xilinx.com>
Signed-off-by: John Linn <john.linn@xilinx.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/serio/xilinx_ps2.c:272: warning: cast from pointer
to integer of different size

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Added a new driver for Xilinx XPS PS2 IP. This driver is
a flat driver to better match the Linux driver pattern.

Signed-off-by: Sadanand <sadanan@xilinx.com>
Signed-off-by: John Linn <john.linn@xilinx.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>