sdm: Move blit/hybrid property check to HWCDisplay

- Check the property in HWCDisplay rather than BlitEngine
  to enable/disable hybrid/blit composition.
- Helps in having one point to control the feature

Change-Id: I94d62e96fba4b7bdcdcd86c8f729119a4c53dd95
Crs-fixed: 1006185
4 files changed