disp: msm: display error log signature alignment

Ensure SDE_ERROR error log print function name and line number.
Add a macro DISP_DEV_ERR as a wrapper of dev_err to ensure origin dev_err
will print function name and line number.
This would help with analysis of errors reported with automated testing.

Expected display error log format:
  [FUNCTION_NAME:line] ERROR_MESSAGE

Change-Id: I354f45b492059d5ba2bb110d56443fd338add7ad
Signed-off-by: GG Hou <quic_renjhou@quicinc.com>

msm/sde/sde_encoder_dce.c

@@ -1,8 +1,10 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
+ * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
  * Copyright (c) 2016-2021 The Linux Foundation. All rights reserved.
  */
 
+#define pr_fmt(fmt)	"[drm:%s:%d] " fmt, __func__, __LINE__
 #include <linux/kthread.h>
 #include <linux/debugfs.h>
 #include <linux/seq_file.h>