ARM: dts: imx6qdl-wandboard: Switch to SPDX identifier

Adopt the SPDX license identifier headers to ease license compliance
management.

Most of the wandboard dts files have already been converted, so switch
the remaining ones.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6qdl-wandboard-revb1.dtsi

-/*
- * Copyright 2013 Freescale Semiconductor, Inc.
- *
- * Author: Fabio Estevam <fabio.estevam@freescale.com>
- *
- * 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.
- *
- */
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright 2013 Freescale Semiconductor, Inc.
+//
+// Author: Fabio Estevam <fabio.estevam@freescale.com>
 
 #include "imx6qdl-wandboard.dtsi"
 

arch/arm/boot/dts/imx6qdl-wandboard-revc1.dtsi

-/*
- * Copyright 2013 Freescale Semiconductor, Inc.
- *
- * Author: Fabio Estevam <fabio.estevam@freescale.com>
- *
- * 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.
- *
- */
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright 2013 Freescale Semiconductor, Inc.
+//
+// Author: Fabio Estevam <fabio.estevam@freescale.com>
 
 #include "imx6qdl-wandboard.dtsi"
 

arch/arm/boot/dts/imx6qdl-wandboard-revd1.dtsi

-/*
- * Copyright 2013 Freescale Semiconductor, Inc.
- *
- * Author: Fabio Estevam <fabio.estevam@freescale.com>
- *
- * 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.
- *
- */
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright 2013 Freescale Semiconductor, Inc.
+//
+// Author: Fabio Estevam <fabio.estevam@freescale.com>
 
 #include "imx6qdl-wandboard.dtsi"