ath9k: ath9k_op_ps_wakeup() can be static

drivers/net/wireless/ath/ath9k/init.c:91:6: sparse: symbol 'ath9k_op_ps_wakeup' was not declared. Should it be static?
drivers/net/wireless/ath/ath9k/init.c:96:6: sparse: symbol 'ath9k_op_ps_restore' was not declared. Should it be static?
drivers/net/wireless/ath/ath9k/init.c:101:19: sparse: symbol 'ath9k_ps_ops' was not declared. Should it be static?

Signed-off-by: Fengguang Wu <[email protected]>
Signed-off-by: John W. Linville <[email protected]>
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index 4124140..41736e5 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -88,17 +88,17 @@
 
 static void ath9k_deinit_softc(struct ath_softc *sc);
 
-void ath9k_op_ps_wakeup(struct ath_common *common)
+static void ath9k_op_ps_wakeup(struct ath_common *common)
 {
 	ath9k_ps_wakeup((struct ath_softc *) common->priv);
 }
 
-void ath9k_op_ps_restore(struct ath_common *common)
+static void ath9k_op_ps_restore(struct ath_common *common)
 {
 	ath9k_ps_restore((struct ath_softc *) common->priv);
 }
 
-struct ath_ps_ops ath9k_ps_ops = {
+static struct ath_ps_ops ath9k_ps_ops = {
 	.wakeup = ath9k_op_ps_wakeup,
 	.restore = ath9k_op_ps_restore,
 };