Add ACPI _PLD group definitions for the external ports
that indicate which USB2 and USB3 ports share the same
physical interface.
Change-Id: I7f85720a878a3774d453a9adb82518722f7ba23d
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: https://review.coreboot.org/c/29999
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>