drm/msm/dsi-staging: add default edid

Add a default EDID buffer to the DSI connector. Update the
corresponding panel name and checksum to uniquely identify
this buffer.

CRs-Fixed: 2399075
Change-Id: Ic86873d7725ebb93f69ecc7f9e78cba23ffcddbe
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>