mt76: fill boottime_ns in Rx path

Give a proper boottime_ns value for netlink RX to avoid scan
issues with Android.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mac80211.c

@@ -801,6 +801,7 @@ mt76_rx_convert(struct mt76_dev *dev, struct sk_buff *skb,
 		struct ieee80211_sta **sta)
 {
 	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
+	struct ieee80211_hdr *hdr = mt76_skb_get_hdr(skb);
 	struct mt76_rx_status mstat;
 
 	mstat = *((struct mt76_rx_status *)skb->cb);
@@ -823,6 +824,10 @@ mt76_rx_convert(struct mt76_dev *dev, struct sk_buff *skb,
 	status->device_timestamp = mstat.timestamp;
 	status->mactime = mstat.timestamp;
 
+	if (ieee80211_is_beacon(hdr->frame_control) ||
+	    ieee80211_is_probe_resp(hdr->frame_control))
+		status->boottime_ns = ktime_get_boottime_ns();
+
 	BUILD_BUG_ON(sizeof(mstat) > sizeof(skb->cb));
 	BUILD_BUG_ON(sizeof(status->chain_signal) !=
 		     sizeof(mstat.chain_signal));