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/openrisc/openrisc-generic/config.mk b/board/openrisc/openrisc-generic/config.mk
index c3dc232..dd6595f 100644
--- a/board/openrisc/openrisc-generic/config.mk
+++ b/board/openrisc/openrisc-generic/config.mk
@@ -1,20 +1,7 @@
 #
 # (C) Copyright 2011, Julius Baxter <julius@opencores.org>
 #
-# 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.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
-# MA 02111-1307 USA
+# SPDX-License-Identifier:	GPL-2.0+
 #
 
 PLATFORM_CPPFLAGS += -mhard-mul -mhard-div