Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/clocksource/nomadik-mtu.c b/drivers/clocksource/nomadik-mtu.c
index 8e4ddb9..3f7fa8c 100644
--- a/drivers/clocksource/nomadik-mtu.c
+++ b/drivers/clocksource/nomadik-mtu.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2008 STMicroelectronics
  * Copyright (C) 2010 Alessandro Rubini
  * Copyright (C) 2010 Linus Walleij for ST-Ericsson
- *
- * 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 <linux/init.h>
 #include <linux/interrupt.h>
@@ -69,7 +66,6 @@
 static u32 nmdk_cycle;		/* write-once */
 static struct delay_timer mtu_delay_timer;
 
-#ifdef CONFIG_CLKSRC_NOMADIK_MTU_SCHED_CLOCK
 /*
  * Override the global weak sched_clock symbol with this
  * local implementation which uses the clocksource to get some
@@ -82,7 +78,6 @@
 
 	return -readl(mtu_base + MTU_VAL(0));
 }
-#endif
 
 static unsigned long nmdk_timer_read_current_timer(void)
 {
@@ -234,9 +229,7 @@
 		return ret;
 	}
 
-#ifdef CONFIG_CLKSRC_NOMADIK_MTU_SCHED_CLOCK
 	sched_clock_register(nomadik_read_sched_clock, 32, rate);
-#endif
 
 	/* Timer 1 is used for events, register irq and clockevents */
 	setup_irq(irq, &nmdk_timer_irq);