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/include/configs/omap3_evm_common.h b/include/configs/omap3_evm_common.h
index b1f11c0..3b3e25a 100644
--- a/include/configs/omap3_evm_common.h
+++ b/include/configs/omap3_evm_common.h
@@ -3,15 +3,7 @@
  *
  * Copyright (C) 2006-2011 Texas Instruments Incorporated - http://www.ti.com/
  *
- * 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 "as is" WITHOUT ANY WARRANTY of any
- * kind, whether express or implied; 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+
  */
 
 #ifndef __OMAP3_EVM_COMMON_H