sdm: Add new flag to LayerRequest

- Add destination tonemap flag for the layer to specify that
  the tonemap is needed by DSPP
- Change Primaries+Transfer to struct to align with
  BlendColorSpace with SDM Extn.

Change-Id: Iab468c5eeb56ea496b9ca05b8fec5fc6af98e5a1
Crs-fixed: 2193209
3 files changed