Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/gpu/drm/tegra/hub.h b/drivers/gpu/drm/tegra/hub.h
index 85b8bf4..767a60d 100644
--- a/drivers/gpu/drm/tegra/hub.h
+++ b/drivers/gpu/drm/tegra/hub.h
@@ -1,15 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Copyright (C) 2017 NVIDIA CORPORATION.  All rights reserved.
- *
- * 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.
  */
 
 #ifndef TEGRA_HUB_H
 #define TEGRA_HUB_H 1
 
-#include <drm/drmP.h>
 #include <drm/drm_plane.h>
 
 #include "plane.h"
@@ -38,6 +34,7 @@
 
 struct tegra_display_hub_soc {
 	unsigned int num_wgrps;
+	bool supports_dsc;
 };
 
 struct tegra_display_hub {
@@ -48,6 +45,9 @@
 	struct clk *clk_hub;
 	struct reset_control *rst;
 
+	unsigned int num_heads;
+	struct clk **clk_heads;
+
 	const struct tegra_display_hub_soc *soc;
 	struct tegra_windowgroup *wgrps;
 };