The baseboard uses port USB2 #9, and USB3 #1, but vell does not,
therefore set the port configuration to EMPTY.
Change-Id: I0d03b967fd2a051205ad5807f0bd8916bad7c036
Signed-off-by: Shon <shon.wang@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64628
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>