disp: msm: dp: add ability to select pattern for tpg

Currently the tpg_ctrl node takes a boolean flag to enable or disable
test pattern output on DP controller. It always sets the pattern type
to a default pattern. This change updates this interface to accept an
integer value so the user can select different patterns supported by
the controller.

Change-Id: I399091a57f353b2fb8d29a48a8390898ca9afb55
Signed-off-by: Rajkumar Subbiah <quic_rsubbia@quicinc.com>

msm/dp/dp_debug.h

@@ -1,5 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
+ * Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved.
  * Copyright (c) 2017-2021, The Linux Foundation. All rights reserved.
  */
 
@@ -52,7 +53,7 @@
  * @psm_enabled: specifies whether psm enabled
  * @hdcp_disabled: specifies if hdcp is disabled
  * @hdcp_wait_sink_sync: used to wait for sink synchronization before HDCP auth
- * @tpg_state: specifies whether tpg feature is enabled
+ * @tpg_pattern: selects tpg pattern on the controller
  * @max_pclk_khz: max pclk supported
  * @force_encryption: enable/disable forced encryption for HDCP 2.2
  * @skip_uevent: skip hotplug uevent to the user space
@@ -70,7 +71,7 @@ struct dp_debug {
 	bool psm_enabled;
 	bool hdcp_disabled;
 	bool hdcp_wait_sink_sync;
-	bool tpg_state;
+	u32 tpg_pattern;
 	u32 max_pclk_khz;
 	bool force_encryption;
 	bool skip_uevent;