Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/arm/boot/dts/atlas7-evb.dts b/arch/arm/boot/dts/atlas7-evb.dts
index 900e03b..e0c0291 100644
--- a/arch/arm/boot/dts/atlas7-evb.dts
+++ b/arch/arm/boot/dts/atlas7-evb.dts
@@ -1,9 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * DTS file for CSR SiRFatlas7 Evaluation Board
  *
  * Copyright (c) 2014 Cambridge Silicon Radio Limited, a CSR plc group company.
- *
- * Licensed under GPLv2 or later.
  */
 
 /dts-v1/;