ath9k: rename driver core and hw power save helpers

ath9k_hw_setpower_nolock --> ath9k_hw_setpower()
ath9k_hw_setpower() --> ath9k_setpower()

Also change the param for ath9k_setpower() to pass the ath_softc.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

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

@@ -653,7 +653,7 @@ void ath9k_hw_beaconinit(struct ath_hw *ah, u32 next_beacon, u32 beacon_period);
 void ath9k_hw_set_sta_beacon_timers(struct ath_hw *ah,
 				    const struct ath9k_beacon_state *bs);
 
-bool ath9k_hw_setpower_nolock(struct ath_hw *ah, enum ath9k_power_mode mode);
+bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode);
 
 void ath9k_hw_configpcipowersave(struct ath_hw *ah, int restore, int power_off);