tell mii_attach where the phy is on the chip, rather than asking it to probe every address and have bge_miibus_read fail at the wrong address.
tell mii_attach where the phy is on the chip, rather than asking it to
probe every address and have bge_miibus_read fail at the wrong address.

needed to support recent chips which have phys in locations other than
phy address 1 (and removes a conditional in an io path).

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