cfg80211: remove enum ieee80211_band

This enum is already perfectly aliased to enum nl80211_band, and
the only reason for it is that we get IEEE80211_NUM_BANDS out of
it. There's no really good reason to not declare the number of
bands in nl80211 though, so do that and remove the cfg80211 one.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index ebc5a40..07ef937 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -549,7 +549,7 @@
 	u8 sync_dtim_count;
 	u32 basic_rates;
 	struct ieee80211_rate *beacon_rate;
-	int mcast_rate[IEEE80211_NUM_BANDS];
+	int mcast_rate[NUM_NL80211_BANDS];
 	u16 ht_operation_mode;
 	s32 cqm_rssi_thold;
 	u32 cqm_rssi_hyst;
@@ -938,8 +938,8 @@
  * @common_ie_len: length of the common_ies
  */
 struct ieee80211_scan_ies {
-	const u8 *ies[IEEE80211_NUM_BANDS];
-	size_t len[IEEE80211_NUM_BANDS];
+	const u8 *ies[NUM_NL80211_BANDS];
+	size_t len[NUM_NL80211_BANDS];
 	const u8 *common_ies;
 	size_t common_ie_len;
 };
@@ -1754,7 +1754,7 @@
  * @txq: per-TID data TX queues (if driver uses the TXQ abstraction)
  */
 struct ieee80211_sta {
-	u32 supp_rates[IEEE80211_NUM_BANDS];
+	u32 supp_rates[NUM_NL80211_BANDS];
 	u8 addr[ETH_ALEN];
 	u16 aid;
 	struct ieee80211_sta_ht_cap ht_cap;
@@ -4404,7 +4404,7 @@
  */
 __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
 					struct ieee80211_vif *vif,
-					enum ieee80211_band band,
+					enum nl80211_band band,
 					size_t frame_len,
 					struct ieee80211_rate *rate);
 
@@ -5357,7 +5357,7 @@
 };
 
 static inline int rate_supported(struct ieee80211_sta *sta,
-				 enum ieee80211_band band,
+				 enum nl80211_band band,
 				 int index)
 {
 	return (sta == NULL || sta->supp_rates[band] & BIT(index));