mainboard/*/*.spd.hex: Replace GPLv2 long form headers with SPDX header

Change-Id: I3eb39d985f2712ab0a7a5a76b06ed625eb51c9d0
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41140
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Frans Hendriks <fhendriks@eltan.com>
Reviewed-by: Wim Vervoorn <wvervoorn@eltan.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/facebook/fbg1701/spd/KINGSTON_B5116ECMDXGGB.spd.hex b/src/mainboard/facebook/fbg1701/spd/KINGSTON_B5116ECMDXGGB.spd.hex
index fa56b54..6d65b29 100644
--- a/src/mainboard/facebook/fbg1701/spd/KINGSTON_B5116ECMDXGGB.spd.hex
+++ b/src/mainboard/facebook/fbg1701/spd/KINGSTON_B5116ECMDXGGB.spd.hex
@@ -1,16 +1,5 @@
-#
 # This file is part of the coreboot 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; version 2 of the License.
-#
-# 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-only
 
 #
 # 8 Gb DDR3 (1600 MHz 11-11-11) Kingston B5116ECMDXGGB