drm/msm: set partial update preference per mode

Support for partial update and roi alignment restrictions
varies with the timing values of the panel. This change
moves the bindings related to partial update into resolution
nodes to control the feature dynamically while switching
between resolutions.

Change-Id: Ifa59ad50dff47546514e4674850b6237895d9d2d
Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>