Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/gpu/drm/panel/panel-lvds.c b/drivers/gpu/drm/panel/panel-lvds.c
index 8a16878..ad47cc9 100644
--- a/drivers/gpu/drm/panel/panel-lvds.c
+++ b/drivers/gpu/drm/panel/panel-lvds.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Generic LVDS panel driver
  *
@@ -5,11 +6,6 @@
  * Copyright (C) 2016 Renesas Electronics Corporation
  *
  * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
  */
 
 #include <linux/backlight.h>
@@ -20,14 +16,13 @@
 #include <linux/regulator/consumer.h>
 #include <linux/slab.h>
 
-#include <drm/drmP.h>
-#include <drm/drm_crtc.h>
-#include <drm/drm_panel.h>
-
 #include <video/display_timing.h>
 #include <video/of_display_timing.h>
 #include <video/videomode.h>
 
+#include <drm/drm_crtc.h>
+#include <drm/drm_panel.h>
+
 struct panel_lvds {
 	struct drm_panel panel;
 	struct device *dev;
@@ -152,8 +147,11 @@
 	int ret;
 
 	ret = of_get_display_timing(np, "panel-timing", &timing);
-	if (ret < 0)
+	if (ret < 0) {
+		dev_err(lvds->dev, "%pOF: problems parsing panel-timing (%d)\n",
+			np, ret);
 		return ret;
+	}
 
 	videomode_from_timing(&timing, &lvds->video_mode);