ath9k: make GPIO API to support both of WMAC and SOC

commit 61b559dea4 ("ath9k: add extra GPIO led support")
added ath9k to support access SOC's GPIOs, but implemented
in a separated API: ath9k_hw_request_gpio().

So this patch make the APIs more common, to support both
of WMAC and SOC GPIOs. The new APIs as below,

void ath9k_hw_gpio_request_in();
void ath9k_hw_gpio_request_out();
void ath9k_hw_gpio_free();

NOTE, the BSP of the SOC chips(AR9340, AR9531, AR9550, AR9561)
should set the corresponding MUX registers correctly.

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

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

@@ -160,7 +160,6 @@
 #define AR_GPIO_OUTPUT_MUX_AS_RUCKUS_DATA        0x1e
 
 #define AR_GPIOD_MASK               0x00001FFF
-#define AR_GPIO_BIT(_gpio)          (1 << (_gpio))
 
 #define BASE_ACTIVATE_DELAY         100
 #define RTC_PLL_SETTLE_DELAY        (AR_SREV_9340(ah) ? 1000 : 100)
@@ -302,6 +301,7 @@ struct ath9k_hw_capabilities {
 	u8 max_rxchains;
 	u8 num_gpio_pins;
 	u32 gpio_mask;
+	u32 gpio_requested;
 	u8 rx_hp_qdepth;
 	u8 rx_lp_qdepth;
 	u8 rx_status_len;
@@ -1020,12 +1020,12 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah);
 u32 ath9k_regd_get_ctl(struct ath_regulatory *reg, struct ath9k_channel *chan);
 
 /* GPIO / RFKILL / Antennae */
-void ath9k_hw_cfg_gpio_input(struct ath_hw *ah, u32 gpio);
+void ath9k_hw_gpio_request_in(struct ath_hw *ah, u32 gpio, const char *label);
+void ath9k_hw_gpio_request_out(struct ath_hw *ah, u32 gpio, const char *label,
+			       u32 ah_signal_type);
+void ath9k_hw_gpio_free(struct ath_hw *ah, u32 gpio);
 u32 ath9k_hw_gpio_get(struct ath_hw *ah, u32 gpio);
-void ath9k_hw_cfg_output(struct ath_hw *ah, u32 gpio,
-			 u32 ah_signal_type);
 void ath9k_hw_set_gpio(struct ath_hw *ah, u32 gpio, u32 val);
-void ath9k_hw_request_gpio(struct ath_hw *ah, u32 gpio, const char *label);
 void ath9k_hw_setantenna(struct ath_hw *ah, u32 antenna);
 
 /* General Operation */