drm/msm/dp: add support for dp catalog

Add DisplayPort hardware catalog module which provides the
hardware specific functionalities. Provide hardware
programming functionalities which includes audio, controller,
aux and panel programming for other DP modules to program
the hardware.

Change-Id: Ib49b41e22c3871b9270559c5a5df4bdf40924bf4
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>