ar5416SetTxPowerLimit
extern HAL_BOOL ar5416SetTxPowerLimit(struct ath_hal *ah, uint32_t limit);
ah->ah_setTxPowerLimit = ar5416SetTxPowerLimit;
ar5416SetTxPowerLimit(ah, AH_PRIVATE(ah)->ah_power_limit, AH_PRIVATE(ah)->ah_extra_txpow, 0);
ar5416SetTxPowerLimit(ah, AH_PRIVATE(ah)->ah_power_limit, AH_PRIVATE(ah)->ah_extra_txpow, 0);