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/board/esd/meesc/Makefile b/board/esd/meesc/Makefile
index f3bf05d..c13e221 100644
--- a/board/esd/meesc/Makefile
+++ b/board/esd/meesc/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0+
 #
 # (C) Copyright 2003-2008
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
@@ -5,8 +6,5 @@
 # (C) Copyright 2008
 # Stelian Pop <stelian@popies.net>
 # Lead Tech Design <www.leadtechdesign.com>
-#
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 obj-y	+= meesc.o
diff --git a/board/esd/meesc/meesc.c b/board/esd/meesc/meesc.c
index 0c5900a..29b6341 100644
--- a/board/esd/meesc/meesc.c
+++ b/board/esd/meesc/meesc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2007-2008
  * Stelian Pop <stelian@popies.net>
@@ -6,8 +7,6 @@
  * (C) Copyright 2009-2015
  * Daniel Gorsulowski <daniel.gorsulowski@esd.eu>
  * esd electronic system design gmbh <www.esd.eu>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/board/esd/vme8349/Makefile b/board/esd/vme8349/Makefile
index fa11d5d..850c16b 100644
--- a/board/esd/vme8349/Makefile
+++ b/board/esd/vme8349/Makefile
@@ -1,11 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0+
 #
 # (C) Copyright 2006
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 #
 # Copyright (c) 2009 esd gmbh hannover germany.
-#
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 obj-y += vme8349.o caddy.o
 obj-$(CONFIG_PCI) += pci.o
diff --git a/board/esd/vme8349/caddy.c b/board/esd/vme8349/caddy.c
index 0c1574c..db8d7bf 100644
--- a/board/esd/vme8349/caddy.c
+++ b/board/esd/vme8349/caddy.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * caddy.c -- esd VME8349 support for "missing" access modes in TSI148.
  * Copyright (c) 2009 esd gmbh.
  *
  * Reinhard Arlt <reinhard.arlt@esd-electronics.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/board/esd/vme8349/caddy.h b/board/esd/vme8349/caddy.h
index 989f3c7..8e3033b 100644
--- a/board/esd/vme8349/caddy.h
+++ b/board/esd/vme8349/caddy.h
@@ -1,10 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * caddy.c -- esd VME8349 support for "missing" access modes in TSI148.
  * Copyright (c) 2009 esd gmbh.
  *
  * Reinhard Arlt <reinhard.arlt@esd-electronics.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #ifndef __CADDY_H__
diff --git a/board/esd/vme8349/pci.c b/board/esd/vme8349/pci.c
index f1cfa23..82347f2 100644
--- a/board/esd/vme8349/pci.c
+++ b/board/esd/vme8349/pci.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * pci.c -- esd VME8349 PCI board support.
  * Copyright (c) 2006 Wind River Systems, Inc.
@@ -7,8 +8,6 @@
  * Reinhard Arlt <reinhard.arlt@esd-electronics.com>
  *
  * Based on MPC8349 PCI support but w/o PIB related code.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <asm/mmu.h>
diff --git a/board/esd/vme8349/vme8349.c b/board/esd/vme8349/vme8349.c
index 35a1538..45ad3a8 100644
--- a/board/esd/vme8349/vme8349.c
+++ b/board/esd/vme8349/vme8349.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * vme8349.c -- esd VME8349 board support
  *
@@ -8,8 +9,6 @@
  *
  * Reinhard Arlt <reinhard.arlt@esd-electronics.com>
  * Based on board/mpc8349emds/mpc8349emds.c (and previous 834x releases.)
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/board/esd/vme8349/vme8349pin.h b/board/esd/vme8349/vme8349pin.h
index fcf6c59..9ae9c7b 100644
--- a/board/esd/vme8349/vme8349pin.h
+++ b/board/esd/vme8349/vme8349pin.h
@@ -1,10 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * vme8349pin.h -- esd VME8349 MPC8349 I/O pin definition.
  * Copyright (c) 2009 esd gmbh.
  *
  * Reinhard Arlt <reinhard.arlt@esd-electronics.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #ifndef __VME8349PIN_H__