libertas: make some functions void

They don't return anything meaningfull and no-one cares about their results.

Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/libertas/cmd.h b/drivers/net/wireless/libertas/cmd.h
index 3dfc2d4..4295bc6 100644
--- a/drivers/net/wireless/libertas/cmd.h
+++ b/drivers/net/wireless/libertas/cmd.h
@@ -44,7 +44,7 @@
 
 int lbs_host_sleep_cfg(struct lbs_private *priv, uint32_t criteria);
 int lbs_suspend(struct lbs_private *priv);
-int lbs_resume(struct lbs_private *priv);
+void lbs_resume(struct lbs_private *priv);
 
 int lbs_cmd_802_11_inactivity_timeout(struct lbs_private *priv,
 				      uint16_t cmd_action, uint16_t *timeout);