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/sde/sde_hw_pingpong.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2015-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2015-2021, The Linux Foundation. All rights reserved.
  */
 
 #ifndef _SDE_HW_PINGPONG_H
@@ -15,6 +15,11 @@
 struct sde_hw_pingpong;
 struct sde_hw_merge_3d;
 
+#define DITHER_DEPTH_MAP_INDEX 9
+static u32 dither_depth_map[DITHER_DEPTH_MAP_INDEX] = {
+	0, 0, 0, 0, 0, 1, 2, 3, 3
+};
+
 struct sde_hw_dsc_cfg {
 	u8 enable;
 };