allow attaching radio on bktr; from netbsd w/ fixes from Vladimir Popov <jumbo@narod.ru>
allow attaching radio on bktr; from netbsd w/ fixes from Vladimir Popov <jumbo@narod.ru>

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