sdm: Add support for HAL_PIXEL_FORMAT_BGR_565

1. HAL_PIXEL_FORMAT_RGB_565 has BGR ordering, so it cannot be macro
   tiled as per UBWC specifications. HAL_PIXEL_FORMAT_BGR_565 has
   been defined to enable RGB_565 UBWC rendering.
2. Define kFormatBGR565 to support HAL_PIXEL_FORMAT_BGR_565 in SDM.
3. Replace kFormatRGB565Ubwc with kFormatBGR565Ubwc format.

CRs-Fixed: 904907
Change-Id: Iade48cae51087424c3d8ecb3c39285448aad5151
7 files changed