[coreboot-gerrit] Change in coreboot[master]: mainboard/*/*.spd.hex: Replace GPLv2 long form headers with SPDX header

[Angel Pons (Code Review)]

Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/41140 )

Change subject: mainboard/*/*.spd.hex: Replace GPLv2 long form headers with SPDX header
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Patch Set 1: Code-Review+2