Use chromeos mirror of coreboot

Since we maintain our own mirror of coreboot, and that is what the
chroot uses, also build the coreboot tools from there.

BUG=b:359661414
TEST=build-servod && run-servod-tests && start-servod --sleep
TEST=docker exec -it $container ifdtool --help | grep -- -g

Change-Id: Ia8df5dad041c9422eba0499aa155ad0634005bd1
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/hdctools/+/5834662
Tested-by: Jeremy Bettis <jbettis@chromium.org>
Auto-Submit: Jeremy Bettis <jbettis@chromium.org>
Commit-Queue: Jeremy Bettis <jbettis@chromium.org>
Reviewed-by: Michal Matyjek <mmatyjek@google.com>
Reviewed-by: 488603086791@cloudbuild.gserviceaccount.com <488603086791@cloudbuild.gserviceaccount.com>
Reviewed-by: Keith Haddow <haddowk@chromium.org>
1 file changed