mac80211_hwsim: fix NUM_BANDS usage

Due to the recent change of NUM_BANDS from 2 to 3 hwsim
broke. Fix the code by using the right constant but don't
support bands other than 2.4 and 5 GHz.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/mac80211_hwsim.c

@@ -292,7 +292,7 @@ struct mac80211_hwsim_data {
 	struct list_head list;
 	struct ieee80211_hw *hw;
 	struct device *dev;
-	struct ieee80211_supported_band bands[2];
+	struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
 	struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 	struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 	struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
@@ -1855,7 +1855,7 @@ static int __init init_mac80211_hwsim(void)
 				sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
 				break;
 			default:
-				break;
+				continue;
 			}
 
 			sband->ht_cap.ht_supported = true;