msm: mdss: Add support to make use of interrupt data pointer in an isr

Add support to make use of interrupt data pointer during an isr
such that mdss panel devices retrieve and use their private data
to service an interrupt rather than using global variables.

Change-Id: I51a6b1c2814a23b3297556e914ce9601ef266533
Signed-off-by: Ujwal Patel <ujwalp@codeaurora.org>