il_get_hw_mode
sband = il_get_hw_mode(il, band);
sband = il_get_hw_mode(il, band);
hw = il_get_hw_mode(il, il->band);
supp_band = il_get_hw_mode(il, NL80211_BAND_2GHZ);
supp_band = il_get_hw_mode(il, NL80211_BAND_5GHZ);