disp: msm: sde: don't advertise rotation for virtual planes

For existing HW, in-line rotation is only supported on master
planes. Remove publishing support for rotate-90 and rotate-270
on all virtual planes. Also, fixup the published support for
180 degree rotation which can be performed on all pipes that
have both X & Y axes reflections.

Change-Id: Iff248abeefeb2a100ffd833d94b429b47b6d407b
Signed-off-by: Steve Cohen <cohens@codeaurora.org>