[PATCH] fix:gpio: mark symbols static where possible

[Baoyou Xie]

We get 1 warning about global functions without a declaration
in the ath9k gpio driver when building with W=1:
drivers/net/wireless/ath/ath9k/gpio.c:25:6: warning: no previous prototype for 'ath_fill_led_pin' [-Wmissing-prototypes]

In fact, this function is only used in the file in which it is declared
and don't need a declaration, but can be made static.
so this patch marks it 'static'.

Signed-off-by: Baoyou Xie <baoyou.xie@xxxxxxxxxx>
---
 drivers/net/wireless/ath/ath9k/gpio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath9k/gpio.c b/drivers/net/wireless/ath/ath9k/gpio.c
index 490f74d..ddb2886 100644
--- a/drivers/net/wireless/ath/ath9k/gpio.c
+++ b/drivers/net/wireless/ath/ath9k/gpio.c
@@ -22,7 +22,7 @@
 
 #ifdef CONFIG_MAC80211_LEDS
 
-void ath_fill_led_pin(struct ath_softc *sc)
+static void ath_fill_led_pin(struct ath_softc *sc)
 {
 	struct ath_hw *ah = sc->sc_ah;
 
-- 
2.7.4