mt76: connac: fix HT A-MPDU setting field in STA_REC_PHY

The MT7921 firmware needs this to enable tx A-MPDU properly
Reported-by: Jayden Kuo (郭育辰) <Jayden.Kuo@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210507100211.15709-1-nbd@nbd.name

drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c

@@ -721,6 +721,10 @@ void mt76_connac_mcu_sta_tlv(struct mt76_phy *mphy, struct sk_buff *skb,
 	phy->phy_type = mt76_connac_get_phy_mode_v2(mphy, vif, band, sta);
 	phy->basic_rate = cpu_to_le16((u16)vif->bss_conf.basic_rates);
 	phy->rcpi = rcpi;
+	phy->ampdu = FIELD_PREP(IEEE80211_HT_AMPDU_PARM_FACTOR,
+				sta->ht_cap.ampdu_factor) |
+		     FIELD_PREP(IEEE80211_HT_AMPDU_PARM_DENSITY,
+				sta->ht_cap.ampdu_density);
 
 	tlv = mt76_connac_mcu_add_tlv(skb, STA_REC_RA, sizeof(*ra_info));
 	ra_info = (struct sta_rec_ra_info *)tlv;