libertas: make some more functions static

sparse was getting on my tits.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/libertas/main.c b/drivers/net/wireless/libertas/main.c
index 2fe7ad0..c51d3af 100644
--- a/drivers/net/wireless/libertas/main.c
+++ b/drivers/net/wireless/libertas/main.c
@@ -252,8 +252,8 @@
 	return strlen(buf);
 }
 
-int lbs_add_rtap(struct lbs_private *priv);
-void lbs_remove_rtap(struct lbs_private *priv);
+static int lbs_add_rtap(struct lbs_private *priv);
+static void lbs_remove_rtap(struct lbs_private *priv);
 
 /**
  * Get function for sysfs attribute rtap
@@ -1423,7 +1423,7 @@
 }
 
 
-void lbs_remove_rtap(struct lbs_private *priv)
+static void lbs_remove_rtap(struct lbs_private *priv)
 {
 	if (priv->rtap_net_dev == NULL)
 		return;
@@ -1432,7 +1432,7 @@
 	priv->rtap_net_dev = NULL;
 }
 
-int lbs_add_rtap(struct lbs_private *priv)
+static int lbs_add_rtap(struct lbs_private *priv)
 {
 	int rc = 0;
 	struct net_device *rtap_dev;