videorefclock: refactoring
X11: expose crtc needed by drm video sync
videorefclock: add video sync drm
[egl] Add support for calling OnResetDevice on display mode change
[rbp] Add method for waiting for next vsync
Add VideoReference clock for Raspberry Pi
Merge pull request #5582 from FernetMenta/refclock

VideoReferenceClock: refactor, fixes, video sync for RPi