disp: msm: dp: Masking interrupt for eDP

Changes to mask unplug, replug and plug based interrupts
for eDP.

Change-Id: I4ffaff67b98b647e5dbed6913b9851588d9dd5cc
Signed-off-by: Soutrik Mukhopadhyay <quic_mukhopad@quicinc.com>
Signed-off-by: Nilesh Laad <quic_nlaad@quicinc.com>