drm/msm/sde: reject partial updates during modeset

Reject any requests to do partial frame update during a
modeset operation which inherently must program the full
resolution. As well, add event logs related to partial ROIs.

Change-Id: I66cce0955eb1f0073eb12f717dd0440d0676c596
Signed-off-by: Lloyd Atkinson <latkinso@codeaurora.org>