Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/i2c/muxes/i2c-mux-gpmux.c b/drivers/i2c/muxes/i2c-mux-gpmux.c
index 92cf5f4..f830535 100644
--- a/drivers/i2c/muxes/i2c-mux-gpmux.c
+++ b/drivers/i2c/muxes/i2c-mux-gpmux.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * General Purpose I2C multiplexer
  *
  * Copyright (C) 2017 Axentia Technologies AB
  *
  * Author: Peter Rosin <peda@axentia.se>
- *
- * 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/i2c.h>
@@ -120,8 +117,8 @@
 
 		ret = of_property_read_u32(child, "reg", &chan);
 		if (ret < 0) {
-			dev_err(dev, "no reg property for node '%s'\n",
-				child->name);
+			dev_err(dev, "no reg property for node '%pOFn'\n",
+				child);
 			goto err_children;
 		}