msm-of: Remove init macros to avoid "section mismatch" error during compilation

Change-Id: Ibcb0ffa9e11a200d866f11bf151a7705b2f3b343
msm: mdss: allow threads to be interruptible

wait_event puts the process into an uninterruptible sleep.

use wait_event_interruptible to allow our thread to be interrupted
by signals and reduce cpu load

Change-Id: I68d4d15c42d98ee80f7d1c839096a6e7ce82ae20