drm/msm/dp: add support for dp controller

Add support for DisplayPort's hardware controller module.
Provide the functionalities to other modules to program
the DP controller. DP controller modules can power on/off
the controller, send different test patterns, do the link
training and interact with other DP modules.

Change-Id: I42c6a5e30b04728f5120252b85fee7ee6717ec21
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>
2 files changed