mac80211: Add support for NL80211_STA_INFO_AIRTIME_LINK_METRIC

Add support for mesh airtime link metric attribute
NL80211_STA_INFO_AIRTIME_LINK_METRIC.

Signed-off-by: Narayanraddi Masti <team.nmasti@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index b13234a..5859a5e 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1327,6 +1327,7 @@ struct cfg80211_tid_stats {
  * @fcs_err_count: number of packets (MPDUs) received from this station with
  *	an FCS error. This counter should be incremented only when TA of the
  *	received packet with an FCS error matches the peer MAC address.
+ * @airtime_link_metric: mesh airtime link metric.
  */
 struct station_info {
 	u64 filled;
@@ -1381,6 +1382,8 @@ struct station_info {
 
 	u32 rx_mpdu_count;
 	u32 fcs_err_count;
+
+	u32 airtime_link_metric;
 };
 
 #if IS_ENABLED(CONFIG_CFG80211)