[coreboot-gerrit] Change in coreboot[master]: {drivers,ec/kontron}: 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/+/41135 )

Change subject: {drivers,ec/kontron}: Replace GPLv2 long form headers with SPDX header
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Patch Set 2: Code-Review+2