Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
index 339eb17..c4e8006 100644
--- a/arch/arm/mm/proc-v7.S
+++ b/arch/arm/mm/proc-v7.S
@@ -1,12 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  *  linux/arch/arm/mm/proc-v7.S
  *
  *  Copyright (C) 2001 Deep Blue Solutions Ltd.
  *
- * 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.
- *
  *  This is the "shell" of the ARMv7 processor support.
  */
 #include <linux/arm-smccc.h>
@@ -392,6 +389,11 @@
 	orr	r10, r10, #1 << 24		@ set bit #24
 	mcr	p15, 0, r10, c15, c0, 1		@ write diagnostic register
 #endif
+#ifdef CONFIG_ARM_ERRATA_857271
+	mrc	p15, 0, r10, c15, c0, 1		@ read diagnostic register
+	orr	r10, r10, #3 << 10		@ set bits #10 and #11
+	mcr	p15, 0, r10, c15, c0, 1		@ write diagnostic register
+#endif
 	b	__errata_finish
 
 __ca17_errata:
@@ -407,6 +409,11 @@
 	orrle	r10, r10, #1 << 12		@ set bit #12
 	mcrle	p15, 0, r10, c15, c0, 1		@ write diagnostic register
 #endif
+#ifdef CONFIG_ARM_ERRATA_857272
+	mrc	p15, 0, r10, c15, c0, 1		@ read diagnostic register
+	orr	r10, r10, #3 << 10		@ set bits #10 and #11
+	mcr	p15, 0, r10, c15, c0, 1		@ write diagnostic register
+#endif
 	b	__errata_finish
 
 __v7_pj4b_setup: