mt7601u: set promiscous mode based on FIF_OTHER_BSS

Most drivers use FIF_OTHER_BSS to set promiscous mode.  Let us
follow their lead even though it doesn't match exactly the HW
filter flags.
Signed-off-by: NJakub Kicinski <kubakici@wp.pl>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/mediatek/mt7601u/main.c

@@ -119,6 +119,7 @@ mt76_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
 
 	dev->rxfilter &= ~MT_RX_FILTR_CFG_OTHER_BSS;
 
+	MT76_FILTER(OTHER_BSS, MT_RX_FILTR_CFG_PROMISC);
 	MT76_FILTER(FCSFAIL, MT_RX_FILTR_CFG_CRC_ERR);
 	MT76_FILTER(PLCPFAIL, MT_RX_FILTR_CFG_PHY_ERR);
 	MT76_FILTER(CONTROL, MT_RX_FILTR_CFG_ACK |