[PATCH] libertas: make more functions static & remove unused functions

Some functions where declared in header files, but used only once. They are
now static functions.

After doing this, I found out that some functions weren't used at all. I
removed this dead code.

Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/libertas/wext.c b/drivers/net/wireless/libertas/wext.c
index 0b805e3..e8c0629 100644
--- a/drivers/net/wireless/libertas/wext.c
+++ b/drivers/net/wireless/libertas/wext.c
@@ -157,7 +157,7 @@
  *  @option 			Radio Option
  *  @return 	   		0 --success, otherwise fail
  */
-int wlan_radio_ioctl(wlan_private * priv, u8 option)
+static int wlan_radio_ioctl(wlan_private * priv, u8 option)
 {
 	int ret = 0;
 	wlan_adapter *adapter = priv->adapter;