ath9k: Add a debug entry to start/stop ANI

this helps the user to start/stop ANI dynamically.

Signed-off-by: Mohammed Shafi Shajakhan <mshajakhan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath.h b/drivers/net/wireless/ath/ath.h
index 7cf4317..17c4b56 100644
--- a/drivers/net/wireless/ath/ath.h
+++ b/drivers/net/wireless/ath/ath.h
@@ -161,6 +161,7 @@
 	const struct ath_bus_ops *bus_ops;
 
 	bool btcoex_enabled;
+	bool disable_ani;
 };
 
 struct sk_buff *ath_rxbuf_alloc(struct ath_common *common,