ath9k: free GPIO resource for SOC GPIOs

For SOC GPIOs, should call ath9k_hw_gpio_free() to release
the GPIO resource.

Signed-off-by: Miaoqing Pan <miaoqing@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

drivers/net/wireless/ath/ath9k/btcoex.h

@@ -123,6 +123,7 @@ struct ath_btcoex_hw {
 void ath9k_hw_btcoex_init_scheme(struct ath_hw *ah);
 void ath9k_hw_btcoex_init_2wire(struct ath_hw *ah);
 void ath9k_hw_btcoex_init_3wire(struct ath_hw *ah);
+void ath9k_hw_btcoex_deinit(struct ath_hw *ah);
 void ath9k_hw_btcoex_init_mci(struct ath_hw *ah);
 void ath9k_hw_init_btcoex_hw(struct ath_hw *ah, int qnum);
 void ath9k_hw_btcoex_set_weight(struct ath_hw *ah,