disp: msm: sde: handle partial update transitions in rounded corner

This change handles partial update use case transitions. Rounded
corner should be programmed to full ROI when transitioning out of
partial update use case.
This change also clear cached ROIs when rounded corner feature is
disabled to ensure full frame ROI for first frame when feature
is enabled again. This change depends on HAL change to disable PU
for one frame when RC mask config is set.
This change also moves cached rectangles from crtc state to crtc
structure to avoid cached rectangles being incorrect due to race
conditions between updating cached rectangles in crtc state and
duplicating crtc state when next commit starts.

Change-Id: I4c48ccd3f64409d1b0fa19f0e6f92eab5f86d099
Signed-off-by: Anjaneya Prasad Musunuri <aprasad@codeaurora.org>