disp: msm: add capability to dump limited debugbus info in logs

Add a flag SDE_DBG_DUMP_IN_LOG_LIMITED based on which the debug bus
registers dumped in log can be limited. In memory logging will continue
to dump the full range of configured registers if that flag is set.
Currently the in-log limited support is enabled  only for the sde/vbif
debugbus and both IN_LOG & IN_LOG_LIMITED will be treated the same way
for other blocks.

Change-Id: Ie85d3d16955cfa507bb3e02954d9b313851eef78
Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>

msm/sde_dbg.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2021, The Linux Foundation. All rights reserved.
  */
 
 #ifndef SDE_DBG_H_
@@ -41,6 +41,7 @@ enum sde_dbg_evtlog_flag {
 enum sde_dbg_dump_flag {
 	SDE_DBG_DUMP_IN_LOG = BIT(0),
 	SDE_DBG_DUMP_IN_MEM = BIT(1),
+	SDE_DBG_DUMP_IN_LOG_LIMITED = BIT(2),
 };
 
 enum sde_dbg_dump_context {