ath9k_htc: use ath9k_cmn_init_channels_rates

and ath_common sbands.

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/htc.h

@@ -487,7 +487,6 @@ struct ath9k_htc_priv {
 	unsigned long op_flags;
 
 	struct ath9k_hw_cal_data caldata;
-	struct ieee80211_supported_band sbands[IEEE80211_NUM_BANDS];
 
 	spinlock_t beacon_lock;
 	struct htc_beacon_config cur_beacon_conf;