drm/msm: Add support for PCC in Crtc

CRTC contains the dspp block which contains color processing modules.
Change adds the pcc support to the CRTC.

Change-Id: Ib4091d43d819ab4f20f16892277ccd1d21285c61
Signed-off-by: Gopikrishnaiah Anandan <agopik@codeaurora.org>