wifi: mt76: mt7996: fix rx rate report for CBW320-2

RX vector reports channel bandwidth 320-1 and 320-2 with different
values. Fix it to correctly report rx rate when using CBW320-2.

Fixes: 80f5a31d ("wifi: mt76: mt7996: add support for EHT rate report")
Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7996/mac.c

@@ -433,7 +433,9 @@ mt7996_mac_fill_rx_rate(struct mt7996_dev *dev,
 	case IEEE80211_STA_RX_BW_160:
 		status->bw = RATE_INFO_BW_160;
 		break;
+	/* rxv reports bw 320-1 and 320-2 separately */
 	case IEEE80211_STA_RX_BW_320:
+	case IEEE80211_STA_RX_BW_320 + 1:
 		status->bw = RATE_INFO_BW_320;
 		break;
 	default: