axf_mii_write
axf_mii_write(dp, MII_AN_ADVERT, 0, &err);
axf_mii_write(dp, MII_AN_ADVERT, PROBE_PAT, &err);
ugcp->usbgc_mii_write = &axf_mii_write;
static void axf_mii_write(struct usbgem_dev *, uint_t, uint16_t, int *errp);