ath9k: enable LED pin for AR946/8x chipsets

now the LED starts working for AR946/8x chipsets

Cc: "Balasubramanian, senthilkumar" <senthilb@qca.qualcomm.com>
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 0fb4a26..45be0a3 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -461,6 +461,7 @@
 #define ATH_LED_PIN_9287		8
 #define ATH_LED_PIN_9300		10
 #define ATH_LED_PIN_9485		6
+#define ATH_LED_PIN_9480		0
 
 #ifdef CONFIG_MAC80211_LEDS
 void ath_init_leds(struct ath_softc *sc);