Add GPL-2.0+ SPDX-License-Identifier to source files

Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
diff --git a/board/a3m071/Makefile b/board/a3m071/Makefile
index 6f961fb..5d2e4d1 100644
--- a/board/a3m071/Makefile
+++ b/board/a3m071/Makefile
@@ -1,16 +1,5 @@
 #
-# See file CREDITS for list of people who contributed to this
-# project.
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License as
-# published by the Free Software Foundation; either version 2 of
-# the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
+# SPDX-License-Identifier:	GPL-2.0+
 #
 
 include $(TOPDIR)/config.mk
diff --git a/board/a3m071/a3m071.c b/board/a3m071/a3m071.c
index c62ba62..7aeefb2 100644
--- a/board/a3m071/a3m071.c
+++ b/board/a3m071/a3m071.c
@@ -10,13 +10,7 @@
  *
  * Copyright 2012-2013 Stefan Roese <sr@denx.de>
  *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
+ * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/board/a3m071/is46r16320d.h b/board/a3m071/is46r16320d.h
index 8183d81..981359f 100644
--- a/board/a3m071/is46r16320d.h
+++ b/board/a3m071/is46r16320d.h
@@ -2,18 +2,7 @@
  * (C) Copyright 2004
  * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
  *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #define SDRAM_DDR		/* is DDR */
diff --git a/board/a3m071/mt46v16m16-75.h b/board/a3m071/mt46v16m16-75.h
index e49e996..8f42830 100644
--- a/board/a3m071/mt46v16m16-75.h
+++ b/board/a3m071/mt46v16m16-75.h
@@ -2,18 +2,7 @@
  * (C) Copyright 2004
  * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
  *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #define SDRAM_DDR		/* is DDR */