disp: msm: dsi: update PHY configuration to support cphy

Add support to read cphy boolean flag from panel dtsi
and configure DSI PHY registers accordingly. Update the
bit/byte clock calculation according to cphy specifications.
Update clock parents so that the relevant divider blocks
are configured to support cphy.

Change-Id: Iaca61eec01a488657b086f59910c52f8c79e26a4
Signed-off-by: Chandan Uddaraju <chandanu@codeaurora.org>
Signed-off-by: Yuan Zhao <yzhao@codeaurora.org>

msm/dsi/dsi_ctrl_reg.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2015-2019, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2015-2020, The Linux Foundation. All rights reserved.
  */
 
 #ifndef _DSI_CTRL_REG_H_
@@ -144,6 +144,7 @@
 #define DSI_SECURE_DISPLAY_STATUS                  (0x02CC)
 #define DSI_SECURE_DISPLAY_BLOCK_COMMAND_COLOR     (0x02D0)
 #define DSI_SECURE_DISPLAY_BLOCK_VIDEO_COLOR       (0x02D4)
+#define DSI_CPHY_MODE_CTRL                         (0x02D8)
 #define DSI_LOGICAL_LANE_SWAP_CTRL                 (0x0310)
 #define DSI_SPLIT_LINK                             (0x0330)