Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/openrisc/mm/tlb.c b/arch/openrisc/mm/tlb.c
index 6c253a2..dd4f200 100644
--- a/arch/openrisc/mm/tlb.c
+++ b/arch/openrisc/mm/tlb.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * OpenRISC tlb.c
  *
@@ -9,11 +10,6 @@
  * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
  * Copyright (C) 2010-2011 Julius Baxter <julius.baxter@orsoc.se>
  * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
- *
- *      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/sched.h>
@@ -26,7 +22,6 @@
 #include <linux/mm.h>
 #include <linux/init.h>
 
-#include <asm/segment.h>
 #include <asm/tlbflush.h>
 #include <asm/pgtable.h>
 #include <asm/mmu_context.h>