disp: msm: dp: add debugfs node for bpp override

Add a debugfs node to set maximum bpp for the base panel which will
be used in both SST and MST use cases to limit the bpp.

Change-Id: I0ef7866e2b82a2078d6cdf97ee0d7226c2125b21
Signed-off-by: Nisarg Bhavsar <quic_bhavsar@quicinc.com>
Signed-off-by: Rajkumar Subbiah <quic_rsubbia@quicinc.com>

msm/dp/dp_debug.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
  * Copyright (c) 2017-2021, The Linux Foundation. All rights reserved.
  */
 
@@ -2135,6 +2135,8 @@ static int dp_debug_init_link(struct dp_debug_private *debug,
 
 	debugfs_create_u32("link_bw_code", 0644, dir, &debug->panel->link_bw_code);
 
+	debugfs_create_u32("max_bpp", 0644, dir, &debug->panel->max_supported_bpp);
+
 	file = debugfs_create_file("mmrm_clk_cb", 0644, dir, debug, &mmrm_clk_cb_fops);
 	if (IS_ERR_OR_NULL(file)) {
 		rc = PTR_ERR(file);