sdm: Do not disable Partial Update if only FPS changes

Do not disable Partial Update for one frame, if only FPS has changed.
Because if the first frame after transition, has a partial Frame-ROI
and it is followed by Skip Validate frames, then it can benefit those
frames.

CRs-Fixed: 2410114
Change-Id: I86aae43332299dda71245d9ef6c69fef6f493dbf
2 files changed