ath9k_hw: remove enum wireless_mode and its users

The wireless mode bitfield was only used to detect 2.4 and 5 GHz support,
which can be simplified by using ATH9K_HW_CAP_* capabilities.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index a4c5ed4..bc6c4df 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -485,7 +485,7 @@
 		     ARRAY_SIZE(ath9k_5ghz_chantable) !=
 		     ATH9K_NUM_CHANNELS);
 
-	if (test_bit(ATH9K_MODE_11G, sc->sc_ah->caps.wireless_modes)) {
+	if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) {
 		channels = kmemdup(ath9k_2ghz_chantable,
 			sizeof(ath9k_2ghz_chantable), GFP_KERNEL);
 		if (!channels)
@@ -500,7 +500,7 @@
 			ARRAY_SIZE(ath9k_legacy_rates);
 	}
 
-	if (test_bit(ATH9K_MODE_11A, sc->sc_ah->caps.wireless_modes)) {
+	if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) {
 		channels = kmemdup(ath9k_5ghz_chantable,
 			sizeof(ath9k_5ghz_chantable), GFP_KERNEL);
 		if (!channels) {
@@ -681,17 +681,17 @@
 	hw->rate_control_algorithm = "ath9k_rate_control";
 #endif
 
-	if (test_bit(ATH9K_MODE_11G, sc->sc_ah->caps.wireless_modes))
+	if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
 		hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 			&sc->sbands[IEEE80211_BAND_2GHZ];
-	if (test_bit(ATH9K_MODE_11A, sc->sc_ah->caps.wireless_modes))
+	if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
 		hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 			&sc->sbands[IEEE80211_BAND_5GHZ];
 
 	if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
-		if (test_bit(ATH9K_MODE_11G, sc->sc_ah->caps.wireless_modes))
+		if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
 			setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_2GHZ].ht_cap);
-		if (test_bit(ATH9K_MODE_11A, sc->sc_ah->caps.wireless_modes))
+		if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
 			setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_5GHZ].ht_cap);
 	}