drm/msm: Suspend/Resume support for color processing features

Color processing features that are enabled by user-space clients need
to be saved when crtc goes to suspend. Once crtc resumes, the following
commit cycle will restore the features.

Change-Id: I2f169a744a5a19fe6456ff4832208a0cbe78be95
Signed-off-by: Gopikrishnaiah Anandan <agopik@codeaurora.org>