ath9k_hw: add functions for controlling PA predistortion calibration

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/Makefile b/drivers/net/wireless/ath/ath9k/Makefile
index dd112be..973ae4f 100644
--- a/drivers/net/wireless/ath/ath9k/Makefile
+++ b/drivers/net/wireless/ath/ath9k/Makefile
@@ -32,7 +32,8 @@
 		mac.o \
 		ar9002_mac.o \
 		ar9003_mac.o \
-		ar9003_eeprom.o
+		ar9003_eeprom.o \
+		ar9003_paprd.o
 
 obj-$(CONFIG_ATH9K_HW) += ath9k_hw.o