drm/msm/dsi-staging: parse dsc version parameters

Parse dsc version and dsc scr version supported by panel
and send the pps command accordingly.

CRs-Fixed: 2202007
Change-Id: I680cc50cb5ae6817f600a8b3eb37f60aab741b4b
Signed-off-by: Vara Reddy <varar@codeaurora.org>
Signed-off-by: Shashank Babu Chinta Venkata <sbchin@codeaurora.org>