mt76: mt7915: update mpdu density in 6g capability

Set mpdu density to 2 usec in 6g capability to meet hardware
capability and also enhance throughput.
Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7915/init.c

@@ -980,7 +980,7 @@ mt7915_init_he_caps(struct mt7915_phy *phy, enum nl80211_band band,
 			u16 cap = IEEE80211_HE_6GHZ_CAP_TX_ANTPAT_CONS |
 				  IEEE80211_HE_6GHZ_CAP_RX_ANTPAT_CONS;
 
-			cap |= u16_encode_bits(IEEE80211_HT_MPDU_DENSITY_8,
+			cap |= u16_encode_bits(IEEE80211_HT_MPDU_DENSITY_2,
 					       IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START) |
 			       u16_encode_bits(IEEE80211_VHT_MAX_AMPDU_1024K,
 					       IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP) |