1. It helps in checking gralloc private usage flags at compile time.
2. Define GRALLOC_MODULE_PERFORM_GET_UBWC_FLAG to enable client to
query the value of "PRIV_FLAGS_UBWC_ALIGNED" flag at run time.
3. Add ADRENO_PIXELFORMAT_NV12_EXT in defined Adreno Pixel formats
to fix NV12_UBWC HAL pixel format conversion to Adreno format.
Change-Id: I78ccac98f1bd1bfbd2aa596ceb7a293f3d2e5f6e
Add adreno_utils header to define Adreno pixel formats, which are
needed by gralloc to map HAL format to corresponding Adreno format.
Change-Id: I6d38f34583955e3990393801f1dca0dd9aa2013b