mark tx as altq-ready. this line was in epic_freebsd_attach() but not in epic_openbsd_attach().
mark tx as altq-ready.
this line was in epic_freebsd_attach() but not in epic_openbsd_attach().

PR 2955

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