mac80211: Add radio led trigger

Some devices have a seperate LED which indicates if the radio is
enabled or not. This adds a LED trigger to mac80211 where drivers
can hook into when they are interested in radio status changes.

v2: Check hw.conf.radio_enabled when calling start().

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/mac80211/ieee80211_led.h b/net/mac80211/ieee80211_led.h
index 0feb226..77b1e1b 100644
--- a/net/mac80211/ieee80211_led.h
+++ b/net/mac80211/ieee80211_led.h
@@ -16,6 +16,8 @@
 extern void ieee80211_led_tx(struct ieee80211_local *local, int q);
 extern void ieee80211_led_assoc(struct ieee80211_local *local,
 				bool associated);
+extern void ieee80211_led_radio(struct ieee80211_local *local,
+				bool enabled);
 extern void ieee80211_led_init(struct ieee80211_local *local);
 extern void ieee80211_led_exit(struct ieee80211_local *local);
 #else
@@ -29,6 +31,10 @@
 				       bool associated)
 {
 }
+static inline void ieee80211_led_radio(struct ieee80211_local *local,
+				       bool enabled)
+{
+}
 static inline void ieee80211_led_init(struct ieee80211_local *local)
 {
 }