mac80211: advertise operating mode notification capability

Use the new extended capabilities advertising to advertise
the fact that operating mode notification is supported.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 9cdbc77..035344b 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -501,6 +501,11 @@
 	},
 };
 
+static const u8 extended_capabilities[] = {
+	0, 0, 0, 0, 0, 0, 0,
+	WLAN_EXT_CAPA8_OPMODE_NOTIF,
+};
+
 struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
 					const struct ieee80211_ops *ops)
 {
@@ -557,6 +562,10 @@
 			WIPHY_FLAG_REPORTS_OBSS |
 			WIPHY_FLAG_OFFCHAN_TX;
 
+	wiphy->extended_capabilities = extended_capabilities;
+	wiphy->extended_capabilities_mask = extended_capabilities;
+	wiphy->extended_capabilities_len = ARRAY_SIZE(extended_capabilities);
+
 	if (ops->remain_on_channel)
 		wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;