Merge "DispSync: Don\'t resync if HW vsync is unavailable" into nyc-dev
am: 15732be

* commit '15732be8aaa961a8eeb50a2cd3db76981ff2e83f':
  DispSync: Don't resync if HW vsync is unavailable

Change-Id: Ifc1ece90ebafe3d984e089b6aeffa9fd03c3fcef