drm/msm/sde: parse qdss entry from device tree for display driver

Add support to parse qdss dt entry to make it accessible
to sde driver through mdp catalog structure.

Change-Id: I1efde13dcfb072fffd69a9467c19837a3774247d
Signed-off-by: Shubhashree Dhar <dhar@codeaurora.org>