Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/char/hw_random/nomadik-rng.c b/drivers/char/hw_random/nomadik-rng.c
index 9c85815..74ed29f 100644
--- a/drivers/char/hw_random/nomadik-rng.c
+++ b/drivers/char/hw_random/nomadik-rng.c
@@ -1,11 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Nomadik RNG support
  *  Copyright 2009 Alessandro Rubini
- *
- *  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/kernel.h>
@@ -61,7 +57,7 @@
 	if (!base)
 		goto out_release;
 	nmk_rng.priv = (unsigned long)base;
-	ret = hwrng_register(&nmk_rng);
+	ret = devm_hwrng_register(&dev->dev, &nmk_rng);
 	if (ret)
 		goto out_release;
 	return 0;
@@ -75,7 +71,6 @@
 
 static int nmk_rng_remove(struct amba_device *dev)
 {
-	hwrng_unregister(&nmk_rng);
 	amba_release_regions(dev);
 	clk_disable(rng_clk);
 	return 0;