- properly maintain sc->curchan - return 1 in athn_intr for the gpio intr too
- properly maintain sc->curchan
- return 1 in athn_intr for the gpio intr too

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