Input: mouse - use macro module_platform_driver()

Commit 940ab88962bc1aff3273a8356d64577a6e386736 introduced a new macro to
save some platform_driver boilerplate code. Use it.

Signed-off-by: JJ Ding <dgdunix@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

diff --cc drivers/input/mouse/amimouse.c
Simple merge

diff --cc drivers/input/mouse/gpio_mouse.c
Simple merge

diff --cc drivers/input/mouse/pxa930_trkball.c
Simple merge