Staging: mrst_touchscreen - clean up input side

Fix most of the stuff that Dmitry pointed out. This leaves the mutex in IRQ
and misuse of SPI to sort out.

Also fix the build bits so it actually builds in staging - whoops.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

diff --cc drivers/staging/Makefile
Simple merge

diff --cc drivers/staging/mrst-touchscreen/Kconfig
Simple merge

diff --cc drivers/staging/mrst-touchscreen/Makefile
Simple merge

diff --cc drivers/staging/mrst-touchscreen/TODO
Simple merge

diff --cc drivers/staging/mrst-touchscreen/intel-mid-touch.c
Simple merge