Imported missing piece of code from gpe kernel.
Merged gpe drivers. (lollipop)

Conflicts:
	drivers/video/msm/mdp.c
	drivers/video/msm/mdp4.h
	drivers/video/msm/mdp4_overlay_dsi_video.c

Change-Id: I15eb16bb5bdb5d564260d7add1ab22130e865019