ath9k_hw: extend ath9k_hw_set_txpowerlimit to test channel txpower

ath9k_hw_set_txpowerlimit gets an extra boolean parameter that - if set -
causes the rate txpower table and the regulatory limit to be calculated
and stored, without changing hardware registers.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/eeprom.h b/drivers/net/wireless/ath/ath9k/eeprom.h
index dacb45e..3c99830 100644
--- a/drivers/net/wireless/ath/ath9k/eeprom.h
+++ b/drivers/net/wireless/ath/ath9k/eeprom.h
@@ -680,7 +680,8 @@
 	void (*set_addac)(struct ath_hw *hw, struct ath9k_channel *chan);
 	void (*set_txpower)(struct ath_hw *hw, struct ath9k_channel *chan,
 			   u16 cfgCtl, u8 twiceAntennaReduction,
-			   u8 twiceMaxRegulatoryPower, u8 powerLimit);
+			   u8 twiceMaxRegulatoryPower, u8 powerLimit,
+			   bool test);
 	u16 (*get_spur_channel)(struct ath_hw *ah, u16 i, bool is2GHz);
 };