sde: Add support for RGBX_8888 UBWC format

1. Add support for RGBX_8888 UBWC in display engine and gralloc APIs.
2. Set the appropriate rotator output format for RGB* UBWC formats.
3. Move the UBWC aligned format enums in their appropriate range.

Change-Id: I0107f10894f9edbe657fce29b99f6e909c675150
8 files changed