gralloc: Add support to RGB compressed format and handle error

1. Add corresponding adreno format for RGB compressed hal format,
   as new adreno API adreno_init_memory_layout needs ADRENO_FORMAT to
   be passed.
2. Handle the error returned by adreno_init_memory_layout API for the
   inappropriate values passed.

Change-Id: Iedcf306583b83ecb80db5495a801f37d2479276b
CRs-Fixed: 2262839
7 files changed