ath9k: replaces SC_OP_BTCOEX_ENABLED with a bool

Whether or not bluetooth coex has been enabled is a hardware
state and only the hardware helpers will be able to set this.

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/btcoex.h b/drivers/net/wireless/ath/ath9k/btcoex.h
index ed8d01d..b2c3f76 100644
--- a/drivers/net/wireless/ath/ath9k/btcoex.h
+++ b/drivers/net/wireless/ath/ath9k/btcoex.h
@@ -64,6 +64,7 @@
 
 struct ath_btcoex_info {
 	enum ath_btcoex_scheme btcoex_scheme;
+	bool enabled;
 	u8 wlanactive_gpio;
 	u8 btactive_gpio;
 	u8 btpriority_gpio;