ath5k: minor rfkill cleanup

Always enable rfkill since the ifdefs in the code is not really worth
the Kconfig option.  Also fix a few code style things, and remove the
usage of the ah_gpio[] array so we can remove it later.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath5k/ath5k.h

@@ -1257,13 +1257,8 @@ extern int ath5k_hw_set_gpio(struct ath5k_hw *ah, u32 gpio, u32 val);
 extern void ath5k_hw_set_gpio_intr(struct ath5k_hw *ah, unsigned int gpio, u32 interrupt_level);
 
 /* rfkill Functions */
-#ifdef CONFIG_ATH5K_RFKILL
 extern void ath5k_rfkill_hw_start(struct ath5k_hw *ah);
 extern void ath5k_rfkill_hw_stop(struct ath5k_hw *ah);
-#else
-static inline void ath5k_rfkill_hw_start(struct ath5k_hw *ah) {}
-static inline void ath5k_rfkill_hw_stop(struct ath5k_hw *ah) {}
-#endif
 
 /* Misc functions */
 int ath5k_hw_set_capabilities(struct ath5k_hw *ah);