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_display_test.c

@@ -26,13 +26,13 @@ static void dsi_display_test_work(struct work_struct *work)
 	display = test->display;
 	rc = dsi_display_get_mode_count(display, &count);
 	if (rc) {
-		pr_err("failed to get modes count, rc=%d\n", rc);
+		DSI_ERR("failed to get modes count, rc=%d\n", rc);
 		goto test_fail;
 	}
 
 	rc = dsi_display_get_modes(display, &modes);
 	if (rc) {
-		pr_err("failed to get modes, rc=%d\n", rc);
+		DSI_ERR("failed to get modes, rc=%d\n", rc);
 		goto test_fail_free_modes;
 	}
 
@@ -40,26 +40,26 @@ static void dsi_display_test_work(struct work_struct *work)
 
 	rc = dsi_display_set_mode(display, &modes[0], 0x0);
 	if (rc) {
-		pr_err("failed to set mode, rc=%d\n", rc);
+		DSI_ERR("failed to set mode, rc=%d\n", rc);
 		goto test_fail_free_modes;
 	}
 
 	rc = dsi_display_prepare(display);
 	if (rc) {
-		pr_err("failed to prepare display, rc=%d\n", rc);
+		DSI_ERR("failed to prepare display, rc=%d\n", rc);
 		goto test_fail_free_modes;
 	}
 
 	rc = dsi_display_enable(display);
 	if (rc) {
-		pr_err("failed to enable display, rc=%d\n", rc);
+		DSI_ERR("failed to enable display, rc=%d\n", rc);
 		goto test_fail_unprep_disp;
 	}
 	return;
 
 test_fail_unprep_disp:
 	if (rc) {
-		pr_err("failed to unprep display, rc=%d\n", rc);
+		DSI_ERR("failed to unprep display, rc=%d\n", rc);
 		goto test_fail_free_modes;
 	}
 
@@ -80,7 +80,7 @@ int dsi_display_test_init(struct dsi_display *display)
 
 	done = 1;
 	if (!display) {
-		pr_err("Invalid params\n");
+		DSI_ERR("Invalid params\n");
 		return -EINVAL;
 	}