Respect libdrm vsyncs

Prior to this change, vsyncs for displays were always set via
an Android property, or 60 if the property is not set. This change
respects refresh rates for displays that respond with an EDID block
by querying the proper refresh rate from libdrm.

Bug: 214265398
Test: Manually verifying vsync

Change-Id: Id7094fdea810c2c091693f27e698f8a9a23e2ecd
12 files changed