drm/msm/sde: fix pixel format mapping to/from rotator

SDE drm driver should support the default color
component order instead of operating system
specific order. Correct pixel format mapping to/from
rotator accordingly.

CRs-Fixed: 2028144
Change-Id: I7e7206f70e353629377a60043a2a987d38a09a59
Signed-off-by: Alan Kwong <akwong@codeaurora.org>