drm: msm: dp: align DP driver with DRM upstream framework

Add changes to align DRM Display Port driver to use upstream
DRM kernel framework for DPCD/EDID transactions and Link
Training configuration.

Change-Id: I84d2dd1a2b60ea800cc4c247dad77b61315cd9a1
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>
11 files changed