cfg80211: Add channel information to NL80211_CMD_GET_INTERFACE

If the current channel is known, add frequency and channel type to
NL80211_CMD_GET_INTERFACE.

Signed-off-by: Pontus Fuchs <pontus.fuchs@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 3557354..510a745 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -2688,10 +2688,12 @@
 }
 
 static struct ieee80211_channel *
-ieee80211_wiphy_get_channel(struct wiphy *wiphy)
+ieee80211_wiphy_get_channel(struct wiphy *wiphy,
+			    enum nl80211_channel_type *type)
 {
 	struct ieee80211_local *local = wiphy_priv(wiphy);
 
+	*type = local->_oper_channel_type;
 	return local->oper_channel;
 }