sdm: Support HDR Capabilites thru DisplayFixedConfig

- Add HDR capabilities and panel brightness to the
  DisplayFixedConfig
- In HWC1.5, remove hardcodings for HDR capabilities
  instead query it from SDM and populate accordingly.
- In HWC2.0, support GetHDRCapabilities.

Change-Id: I6606d688708d894a6bd9bf6b13f262452bccc2b4
Crs-fixed: 1110355
8 files changed