ath9k: mark few functions as static

Signed-off-by: Mohammed Shafi Shajakhan <mshajakhan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 097225d..15e5f31 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -217,7 +217,7 @@
  * by reseting the chip.  To accomplish this we must first cleanup any pending
  * DMA, then restart stuff.
 */
-int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
+static int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
 		    struct ath9k_channel *hchan)
 {
 	struct ath_hw *ah = sc->sc_ah;
@@ -861,7 +861,7 @@
 #undef SCHED_INTR
 }
 
-void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw)
+static void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw)
 {
 	struct ath_hw *ah = sc->sc_ah;
 	struct ath_common *common = ath9k_hw_common(ah);
@@ -2327,7 +2327,7 @@
 	return false;
 }
 
-int ath9k_tx_last_beacon(struct ieee80211_hw *hw)
+static int ath9k_tx_last_beacon(struct ieee80211_hw *hw)
 {
 	struct ath_softc *sc = hw->priv;
 	struct ath_hw *ah = sc->sc_ah;