gralloc: Modify check for uncompressed RGB buffers

The previous check for RGB formats skipped certain formats and hence
the alignment was incorrect.
Add a check for all non-compressed RGB formats before calling
getGpuAlignedWidthHeight

CRs-fixed: 888733

Change-Id: Icae4cfb92ceae5e593fd6c5658999fc90ef97ea1
3 files changed