Merge changes...

Merge changes Ia9eebd02,Ia8ab0ef2,Ia6cf3b3f,I6272d756,I66e7ea18,I2e82ae22,I9b10f4ff into dev/msm-4.14-display

* changes:
  drm/msm/sde: concurrent writeback support
  drm/msm: atomic seamless connector change
  drm/msm/sde: add CWB custom property support
  drm/msm/sde: relax crtc for driving multiple connectors
  drm/msm/sde: avoid partial update when DS is enabled
  drm/msm/sde: extend frame retire event handling
  drm/msm/sde: propagate frame error through fence