Merge remote-tracking branch 'quic/dev/msm-4.14-display' into msm-4.14

* quic/dev/msm-4.14-display:
  drm/msm/dp: check dpcd version before dsc dpcd read
  drm/msm/dp: correct dsc params for dual-dsc config
  drm/msm/dp: update pbn and rg calculation for mst dsc
  drm/msm/sde: allocate pingpong-id based on dsc-id

Change-Id: I0f995e7d3c92c72a4106e6740ee8cf7a1aabd1ca
Signed-off-by: Namratha Siddappa <namratha@codeaurora.org>