disp: msm: add cwb dither support

Add cwb dither support.
Catalog: Read dtsi value of cwb dither in pp parse part.
Wb: Install blob property for cwb dither.
Wb hw: Adds a new wb ops function to program cwb dither hardware.
CRTC: To ensure that userspace can check whether cwb dither is supported,
added "has_cwb_dither" to sde kms info.
PingPong: In order to reuse dither's map array, move dither_depth_map array
to pp header file.

Change-Id: I77e6a052a00b7c649452103145e5d7b4c8deb3a2
Signed-off-by: Yuchao Ma <yuchaom@codeaurora.org>

msm/msm_drv.h

@@ -193,6 +193,7 @@ enum msm_mdp_conn_property {
 	CONNECTOR_PROP_HDR_INFO,
 	CONNECTOR_PROP_EXT_HDR_INFO,
 	CONNECTOR_PROP_PP_DITHER,
+	CONNECTOR_PROP_PP_CWB_DITHER,
 	CONNECTOR_PROP_HDR_METADATA,
 	CONNECTOR_PROP_DEMURA_PANEL_ID,