SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/m68k/cpu/mcf532x/Makefile b/arch/m68k/cpu/mcf532x/Makefile
index 9c53c50..7b2ca3e 100644
--- a/arch/m68k/cpu/mcf532x/Makefile
+++ b/arch/m68k/cpu/mcf532x/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0+
 #
 # (C) Copyright 2000-2004
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
-#
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 # ccflags-y += -DET_DEBUG
 
diff --git a/arch/m68k/cpu/mcf532x/cpu.c b/arch/m68k/cpu/mcf532x/cpu.c
index 602c106..a01b5e6 100644
--- a/arch/m68k/cpu/mcf532x/cpu.c
+++ b/arch/m68k/cpu/mcf532x/cpu.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  *
  * (C) Copyright 2000-2003
@@ -5,8 +6,6 @@
  *
  * Copyright (C) 2004-2008, 2012 Freescale Semiconductor, Inc.
  * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/arch/m68k/cpu/mcf532x/cpu_init.c b/arch/m68k/cpu/mcf532x/cpu_init.c
index 8d01f5f..cbf840f 100644
--- a/arch/m68k/cpu/mcf532x/cpu_init.c
+++ b/arch/m68k/cpu/mcf532x/cpu_init.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  *
  * (C) Copyright 2000-2003
@@ -5,8 +6,6 @@
  *
  * (C) Copyright 2004-2008, 2012 Freescale Semiconductor, Inc.
  * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/arch/m68k/cpu/mcf532x/interrupts.c b/arch/m68k/cpu/mcf532x/interrupts.c
index 1e6cb1c..43a903e 100644
--- a/arch/m68k/cpu/mcf532x/interrupts.c
+++ b/arch/m68k/cpu/mcf532x/interrupts.c
@@ -1,9 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  *
  * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
  * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 /* CPU specific interrupt routine */
diff --git a/arch/m68k/cpu/mcf532x/speed.c b/arch/m68k/cpu/mcf532x/speed.c
index a440bbb..661abfa 100644
--- a/arch/m68k/cpu/mcf532x/speed.c
+++ b/arch/m68k/cpu/mcf532x/speed.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  *
  * (C) Copyright 2000-2003
@@ -5,8 +6,6 @@
  *
  * Copyright (C) 2004-2008, 2012 Freescale Semiconductor, Inc.
  * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/arch/m68k/cpu/mcf532x/start.S b/arch/m68k/cpu/mcf532x/start.S
index 4678643..4411e5f 100644
--- a/arch/m68k/cpu/mcf532x/start.S
+++ b/arch/m68k/cpu/mcf532x/start.S
@@ -1,11 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2003	Josef Baumgartner <josef.baumgartner@telex.de>
  * Based on code from Bernhard Kuhn <bkuhn@metrowerks.com>
  *
  * (C) Copyright 2004-2008 Freescale Semiconductor, Inc.
  * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <asm-offsets.h>