src: Remove leading blank lines from SPDX header

Change-Id: I8a207e30a73d10fe67c0474ff11324ae99e2cec6
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41360
Reviewed-by: Wim Vervoorn <wvervoorn@eltan.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/commonlib/storage/Kconfig

@@ -1,5 +1,3 @@
-##
-##
 ## SPDX-License-Identifier: GPL-2.0-only
 
 config COMMONLIB_STORAGE

src/commonlib/storage/Makefile.inc

@@ -1,5 +1,3 @@
-#
-#
 # SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_COMMONLIB_STORAGE),y)