Fix issue #58: fix build on Linux v4.6

Signed-off-by: Christian Scheurer <git@tinytux.ch>
Signed-off-by: Jakub Kicinski <kubakici@wp.pl>

init.c

@@ -471,7 +471,7 @@ struct mt7601u_dev *mt7601u_alloc_device(struct device *pdev)
 }
 
 #define CHAN2G(_idx, _freq) {			\
-	.band = IEEE80211_BAND_2GHZ,		\
+	.band = NL80211_BAND_2GHZ,		\
 	.center_freq = (_freq),			\
 	.hw_value = (_idx),			\
 	.max_power = 30,			\
@@ -565,7 +565,7 @@ mt76_init_sband_2g(struct mt7601u_dev *dev)
 {
 	dev->sband_2g = devm_kzalloc(dev->dev, sizeof(*dev->sband_2g),
 				     GFP_KERNEL);
-	dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = dev->sband_2g;
+	dev->hw->wiphy->bands[NL80211_BAND_2GHZ] = dev->sband_2g;
 
 	WARN_ON(dev->ee->reg.start - 1 + dev->ee->reg.num >
 		ARRAY_SIZE(mt76_channels_2ghz));

main.c

@@ -338,9 +338,23 @@ static int mt7601u_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 
 static int
 mt76_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 6, 0)
+		  struct ieee80211_ampdu_params *params
+#else
 		  enum ieee80211_ampdu_mlme_action action,
-		  struct ieee80211_sta *sta, u16 tid, u16 *ssn, u8 buf_size)
+		  struct ieee80211_sta *sta, u16 tid, u16 *ssn, u8 buf_size
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)
+		  , bool amsdu
+#endif
+#endif
+		  )
 {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 6, 0)
+	enum ieee80211_ampdu_mlme_action action = params->action;
+	struct ieee80211_sta *sta = params->sta;
+	u16 *ssn = &params->ssn;
+	u16 tid = params->tid;
+#endif
 	struct mt7601u_dev *dev = hw->priv;
 	struct mt76_sta *msta = (struct mt76_sta *) sta->drv_priv;