mt76: mt7921: introduce 160 MHz channel bandwidth support

Introduce the basic configuration for BW160 capability in 7922
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7921/init.c

@@ -264,6 +264,10 @@ int mt7921_register_device(struct mt7921_dev *dev)
 			IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
 			IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE |
 			(3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT);
+	if (is_mt7922(&dev->mt76))
+		dev->mphy.sband_5g.sband.vht_cap.cap |=
+			IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
+			IEEE80211_VHT_CAP_SHORT_GI_160;
 
 	dev->mphy.hw->wiphy->available_antennas_rx = dev->mphy.chainmask;
 	dev->mphy.hw->wiphy->available_antennas_tx = dev->mphy.chainmask;

drivers/net/wireless/mediatek/mt76/mt7921/main.c

@@ -128,11 +128,23 @@ mt7921_init_he_caps(struct mt7921_phy *phy, enum nl80211_band band,
 				IEEE80211_HE_PHY_CAP9_RX_1024_QAM_LESS_THAN_242_TONE_RU |
 				IEEE80211_HE_PHY_CAP9_RX_FULL_BW_SU_USING_MU_WITH_COMP_SIGB |
 				IEEE80211_HE_PHY_CAP9_RX_FULL_BW_SU_USING_MU_WITH_NON_COMP_SIGB;
+
+			if (is_mt7922(phy->mt76->dev)) {
+				he_cap_elem->phy_cap_info[0] |=
+					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
+				he_cap_elem->phy_cap_info[8] |=
+					IEEE80211_HE_PHY_CAP8_20MHZ_IN_160MHZ_HE_PPDU |
+					IEEE80211_HE_PHY_CAP8_80MHZ_IN_160MHZ_HE_PPDU;
+			}
 			break;
 		}
 
 		he_mcs->rx_mcs_80 = cpu_to_le16(mcs_map);
 		he_mcs->tx_mcs_80 = cpu_to_le16(mcs_map);
+		if (is_mt7922(phy->mt76->dev)) {
+			he_mcs->rx_mcs_160 = cpu_to_le16(mcs_map);
+			he_mcs->tx_mcs_160 = cpu_to_le16(mcs_map);
+		}
 
 		memset(he_cap->ppe_thres, 0, sizeof(he_cap->ppe_thres));
 		if (he_cap_elem->phy_cap_info[6] &