Inteltool is GPLv2 licensed so all files that link to it should be GPLv2
by default. In addition, the contents of several of these headers were
originally moved directly from gpio_groups.c, which is explicitly marked
as GPL-2.0-only.
Change-Id: Ie897cb238c0c9e89fe677c999cbf1803f5f4609a
Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78628
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
