gralloc: De-couple the UBWC decision for GPU and Rotator

Allow UBWC, if an OpenGL client sets UBWC usage flag and GPU plus MDP
support the format. OR if a non-OpenGL client like Rotator, sets UBWC
usage flag and MDP supports the format. It de-couples the UBWC decision
for Rotator output buffer format from GPU.

Change-Id: I5e78b615f71c1781a40b8c137a37b111eb786323
2 files changed