drm/msm/sde: add inline rotation support to drm plane

Add inline rotation support to drm plane. Inline rotation
reduces ddr usage by redirecting traffic between rotator
output and source pipe to system cache.

CRs-Fixed: 2009714
Change-Id: I9bb39b700d648ee936a1b61eca4bf5cd7b1b8d38
Signed-off-by: Alan Kwong <akwong@codeaurora.org>