Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e8aa0.c b/drivers/gpu/drm/panel/panel-samsung-s6e8aa0.c
index 6ad827b..8185826 100644
--- a/drivers/gpu/drm/panel/panel-samsung-s6e8aa0.c
+++ b/drivers/gpu/drm/panel/panel-samsung-s6e8aa0.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * MIPI-DSI based s6e8aa0 AMOLED LCD 5.3 inch panel driver.
  *
@@ -9,23 +10,23 @@
  * Eunchul Kim <chulspro.kim@samsung.com>
  * Tomasz Figa <t.figa@samsung.com>
  * Andrzej Hajda <a.hajda@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
 */
 
-#include <drm/drmP.h>
-#include <drm/drm_mipi_dsi.h>
-#include <drm/drm_panel.h>
-
+#include <linux/delay.h>
 #include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
 #include <linux/regulator/consumer.h>
 
 #include <video/mipi_display.h>
 #include <video/of_videomode.h>
 #include <video/videomode.h>
 
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_print.h>
+
 #define LDI_MTP_LENGTH			24
 #define GAMMA_LEVEL_NUM			25
 #define GAMMA_TABLE_LEN			26