ath9k: move btcoex core driver info to its own struct

There is some bluetooth coexistance data which is driver
specific, stuff that into its own structure.

Cc: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 1d59f10..831874c 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -451,6 +451,16 @@
 	struct timer_list timer;
 };
 
+struct ath_btcoex {
+	bool hw_timer_enabled;
+	spinlock_t btcoex_lock;
+	struct timer_list period_timer; /* Timer for BT period */
+	u32 bt_priority_cnt;
+	unsigned long bt_priority_time;
+	u32 btcoex_no_stomp; /* in usec */
+	u32 btcoex_period; /* in usec */
+};
+
 /********************/
 /*   LED Control    */
 /********************/
@@ -613,6 +623,7 @@
 	struct ath_beacon_config cur_beacon_conf;
 	struct delayed_work tx_complete_work;
 	struct ath_btcoex_info btcoex_info;
+	struct ath_btcoex btcoex;
 };
 
 struct ath_wiphy {