Calculate the Route String when attaching a new device.  This is still not enough to attach Super Speed devices below USB 3 hubs, but we're getting there.
Calculate the Route String when attaching a new device.  This is still
not enough to attach Super Speed devices below USB 3 hubs, but we're
getting there.

While here reset `acten` when re-enqueuing an interrupt transfers.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars