Merge commit '8e7ab077' into msm-4.14

* commit '8e7ab077':
  drm/msm/sde: validate plane roi for destination scaler usecase
  drm/msm/dp: modify the voltage and pre-emphasis settings
  drm/msm/hdcp: set hardware key once per session
  drm/msm/sde: Add null pointer sanity checks
  ARM: dts: msm: update phy timings for AMOLED fhd plus panel on sdmmagpie
  drm/msm/dsi-staging: fix default value for mdp transfer time
  drm/msm/dp: use extended DPCD fields to configure dp link rate
  drm/msm/sde: Add NULL check before Pointer Dereference
  drm/msm/dp: add operation to free the mst port object
  drm/msm/sde: fix invalid connector state in crtc check

Change-Id: Ie1cf99d30d47297d932b29e0a4bff9089592fe6e
Signed-off-by: Abhijith Desai <desaia@codeaurora.org>