Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/sh/boards/mach-highlander/irq-r7780mp.c b/arch/sh/boards/mach-highlander/irq-r7780mp.c
index 9893fd3..f466373 100644
--- a/arch/sh/boards/mach-highlander/irq-r7780mp.c
+++ b/arch/sh/boards/mach-highlander/irq-r7780mp.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Renesas Solutions Highlander R7780MP Support.
  *
  * Copyright (C) 2002  Atom Create Engineering Co., Ltd.
  * Copyright (C) 2006  Paul Mundt
  * Copyright (C) 2007  Magnus Damm
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/irq.h>
diff --git a/arch/sh/boards/mach-highlander/irq-r7780rp.c b/arch/sh/boards/mach-highlander/irq-r7780rp.c
index 0805b21..c61177e 100644
--- a/arch/sh/boards/mach-highlander/irq-r7780rp.c
+++ b/arch/sh/boards/mach-highlander/irq-r7780rp.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Renesas Solutions Highlander R7780RP-1 Support.
  *
  * Copyright (C) 2002  Atom Create Engineering Co., Ltd.
  * Copyright (C) 2006  Paul Mundt
  * Copyright (C) 2008  Magnus Damm
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/irq.h>
diff --git a/arch/sh/boards/mach-highlander/irq-r7785rp.c b/arch/sh/boards/mach-highlander/irq-r7785rp.c
index 558b248..0ebebbe 100644
--- a/arch/sh/boards/mach-highlander/irq-r7785rp.c
+++ b/arch/sh/boards/mach-highlander/irq-r7785rp.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Renesas Solutions Highlander R7785RP Support.
  *
  * Copyright (C) 2002  Atom Create Engineering Co., Ltd.
  * Copyright (C) 2006 - 2008  Paul Mundt
  * Copyright (C) 2007  Magnus Damm
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/irq.h>
diff --git a/arch/sh/boards/mach-highlander/pinmux-r7785rp.c b/arch/sh/boards/mach-highlander/pinmux-r7785rp.c
index c77a2be..703179f 100644
--- a/arch/sh/boards/mach-highlander/pinmux-r7785rp.c
+++ b/arch/sh/boards/mach-highlander/pinmux-r7785rp.c
@@ -1,9 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2008 Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/gpio.h>
diff --git a/arch/sh/boards/mach-highlander/psw.c b/arch/sh/boards/mach-highlander/psw.c
index 40e2b58..d445c54 100644
--- a/arch/sh/boards/mach-highlander/psw.c
+++ b/arch/sh/boards/mach-highlander/psw.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * arch/sh/boards/renesas/r7780rp/psw.c
  *
  * push switch support for RDBRP-1/RDBREVRP-1 debug boards.
  *
  * Copyright (C) 2006  Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/io.h>
 #include <linux/module.h>
diff --git a/arch/sh/boards/mach-highlander/setup.c b/arch/sh/boards/mach-highlander/setup.c
index 4a52590..533393d 100644
--- a/arch/sh/boards/mach-highlander/setup.c
+++ b/arch/sh/boards/mach-highlander/setup.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * arch/sh/boards/renesas/r7780rp/setup.c
  *
@@ -8,10 +9,6 @@
  *
  * This contains support for the R7780RP-1, R7780MP, and R7785RP
  * Highlander modules.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/io.h>