livedisplay: Move away from usage of ro.vendor.display.foss

* This is used blob side for a variety of purposes, as well as
  the fact that it is set on all Pixel devices, which don't actually
  support this interface.

* Renaming the property only means maintainers will need to migrate to
  the new property to continue supporting this interface.

Change-Id: I578733b20b8bb30e20edcb807add554083f27ce9
2 files changed
tree: 82187c7abe2acdcb01131fdad06166baea054602
  1. legacymm/
  2. sdm/
  3. sysfs/