This change copies ec_commands.h directly from the ChromiumOS EC repo,
with the exception of changing the copyright header to SDPX format.
Update to commit SHA1 2cbf6fbf (ec_commands: Drop VBNV read/write
support).
BUG=b:178689388
TEST=none
BRANCH=none
Change-Id: I74fa8b1171ca109dee163a7657659cdac1687450
Signed-off-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65469
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>