Deactivate the QTDs when removing a queue head to prevent the host controller from reactivating it.  Slight variation on what is suggested in the EHCI spec to work around problems with VIA controllers.
Deactivate the QTDs when removing a queue head to prevent the host
controller from reactivating it.  Slight variation on what is
suggested in the EHCI spec to work around problems with VIA
controllers.

ok dlg@

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