Enable Pepper display and Invert Touchscreen

This backports the correct display information from the Pepper
Android kernel so the Pepper display is enabled without requiring
additional toggle of GPIO59.  The touchscreen y-axis is inverted in
the default setup so this hacks in the inversion switch taken from
the android version of the ti_tscadc driver.

Signed-off-by: Ash Charles <ashcharles@gmail.com>