ath9k_hw: set default values for radar pulse detection

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

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

@@ -782,6 +782,8 @@ struct ath_hw {
 	u8 txchainmask;
 	u8 rxchainmask;
 
+	struct ath_hw_radar_conf radar_conf;
+
 	u32 originalGain[22];
 	int initPDADC;
 	int PDADCdelta;