ath9k_hw: Add abstraction for rx enable

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/hw-ops.h b/drivers/net/wireless/ath/ath9k/hw-ops.h
index 81f3d03..19259fb 100644
--- a/drivers/net/wireless/ath/ath9k/hw-ops.h
+++ b/drivers/net/wireless/ath/ath9k/hw-ops.h
@@ -28,6 +28,11 @@
 	ath9k_hw_ops(ah)->config_pci_powersave(ah, restore, power_off);
 }
 
+static inline void ath9k_hw_rxena(struct ath_hw *ah)
+{
+	ath9k_hw_ops(ah)->rx_enable(ah);
+}
+
 /* Private hardware call ops */
 
 /* PHY ops */