bwn_phy_lp_set_gaintbl
bwn_phy_lp_set_gaintbl(mac, freq);
bwn_phy_lp_set_gaintbl(mac, ieee80211_ieee2mhz(chan, 0));
static void bwn_phy_lp_set_gaintbl(struct bwn_mac *, uint32_t);