the panjit touchscreen needs to be reset when returning from
deep sleep mode; add a platform data structure to specify
the reset GPIO.
perform the reset during _probe, since the code already needs
to exist for _resume
delete a bunch of unused preprocessor defines
Change-Id: I71ae65dec45710b0eab4625036edf75064d4cc2b
Signed-off-by: Gary King <gking@nvidia.com>