*/mb/google/volteer/**/gpio.h: Fix up license header

There's a `GPL-2.0-or-later` version of this file in volteer2, so use it
in place of these weirdly-licensed files.

Change-Id: Icde2f6539d9c726d6967350f74e7bc015e01e7b5
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43855
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

0 files changed, 0 insertions, 0 deletions