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>

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

@@ -461,6 +461,7 @@ void ath9k_btcoex_timer_pause(struct ath_softc *sc);
 #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);

drivers/net/wireless/ath/ath9k/gpio.c

@@ -48,6 +48,8 @@ void ath_init_leds(struct ath_softc *sc)
 			sc->sc_ah->led_pin = ATH_LED_PIN_9485;
 		else if (AR_SREV_9300(sc->sc_ah))
 			sc->sc_ah->led_pin = ATH_LED_PIN_9300;
+		else if (AR_SREV_9480(sc->sc_ah))
+			sc->sc_ah->led_pin = ATH_LED_PIN_9480;
 		else
 			sc->sc_ah->led_pin = ATH_LED_PIN_DEF;
 	}