disp: msm: dsi: adding prefix for logs

Adding debug, info and error prefix for log messages
in dsi files. To enable debug logs
run "echo 0x1 > /sys/module/drm/parameters/debug"

Change-Id: I438ac16954bd1d39450f8adeb7fb17f9ea6f8140
Signed-off-by: Satya Rama Aditya Pinapala <psraditya30@codeaurora.org>

msm/dsi/dsi_ctrl_hw_2_2.c

@@ -3,8 +3,6 @@
  * Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.
  */
 
-#define pr_fmt(fmt) "dsi-hw:" fmt
-
 #include "dsi_ctrl_hw.h"
 #include "dsi_ctrl_reg.h"
 #include "dsi_hw.h"