msm: mdss: add support for hdcp 1.x interrupt handler

Make hdcp 1.x interrupt handling generic for any supported interface.
Add Display-Port interrupt related data and handle interrupts in
ISR. Do this dynamically based on which interface is connected like
HDMI or DP.

Change-Id: I8be206dbc53fd7c757f244dc544241f1d8e1dd1c
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>