hwc: Unblank primary display on bootup.

SurfaceFlinger assumes that the primary is unblanked on bootup.

Bug: 8968732
Change-Id: I8eafa40829aa774d4c1625d927eb500b49e6dded
Signed-off-by: Iliyan Malchev <malchev@google.com>

Conflicts:
	libhwcomposer/hwc_utils.cpp
Revert "hwc: Unblank primary display on bootup."

This reverts commit 80474130da20425ca466120d6c969aa23784bfbd.
gralloc: Add support for lock_ycbcr

Fill the android_ycbcr struct for HAL_PIXEL_FORMAT_YCbCr_*_888
formats.

Change-Id: If0c7abf5e206bf982ad333da2dae57cbac302733

Conflicts:
	libgralloc/gralloc.cpp
	libgralloc/mapper.cpp