soc/baytrail: add missing USB port defs

Add device/address stub for XHCI USB port 7.
Stub data will be supplemented by board-specific info
added in subsequent commits.

Change-Id: Iae874a9ba01e9428e07cf7ff15e663365b2354a9
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/19972
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
1 file changed