drm/msm/dsi-staging: update edid with resolution details

Populate the EDID with the resolutions supported by the
attached display panel to provide the correct resolution
details to the use modules who are reading this EDID.

CRs-Fixed: 2399075
Change-Id: I9ab1e0acdc0db02382ec745cf99b01397308d9d0
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>