libertas: make lbs_update_channel() function non-static

We'll want to use this for meshfrobbing

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/libertas/decl.h b/drivers/net/wireless/libertas/decl.h
index 9b0ef16..45f081b 100644
--- a/drivers/net/wireless/libertas/decl.h
+++ b/drivers/net/wireless/libertas/decl.h
@@ -77,4 +77,5 @@
 int lbs_reset_device(struct lbs_private *priv);
 void lbs_host_to_card_done(struct lbs_private *priv);
 
+int lbs_update_channel(struct lbs_private *priv);
 #endif