mt76: mt76x02: set MT_TXOP_HLDR_TX40M_BLK_EN for mt76x2

It needs to be always enabled for 76x2 and conditionally enabled/disabled
for 76x0. Since mt76x2_mac_stop clears this bit, ensure that it is enabled
in mt76x02_edcca_init
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt76x02_mac.c

@@ -905,14 +905,14 @@ void mt76x02_edcca_init(struct mt76x02_dev *dev, bool enable)
 		mt76_set(dev, MT_TXOP_CTRL_CFG, MT_TXOP_ED_CCA_EN);
 		mt76_rmw(dev, MT_BBP(AGC, 2), GENMASK(15, 0),
 			 ed_th << 8 | ed_th);
-		if (!is_mt76x2(dev))
-			mt76_set(dev, MT_TXOP_HLDR_ET,
-				 MT_TXOP_HLDR_TX40M_BLK_EN);
+		mt76_set(dev, MT_TXOP_HLDR_ET, MT_TXOP_HLDR_TX40M_BLK_EN);
 	} else {
 		mt76_set(dev, MT_TX_LINK_CFG, MT_TX_CFACK_EN);
 		mt76_clear(dev, MT_TXOP_CTRL_CFG, MT_TXOP_ED_CCA_EN);
 		if (is_mt76x2(dev)) {
 			mt76_wr(dev, MT_BBP(AGC, 2), 0x00007070);
+			mt76_set(dev, MT_TXOP_HLDR_ET,
+				 MT_TXOP_HLDR_TX40M_BLK_EN);
 		} else {
 			mt76_wr(dev, MT_BBP(AGC, 2), 0x003a6464);
 			mt76_clear(dev, MT_TXOP_HLDR_ET,