rt3090_filter_calib
static int rt3090_filter_calib(struct rt2860_softc *, uint8_t, uint8_t,
rt3090_filter_calib(sc, 0x07, 0x16, &sc->rf24_20mhz);
rt3090_filter_calib(sc, 0x27, 0x19, &sc->rf24_40mhz);