libertas: use lbs_pr_XX instead of printk

... because lbs_pr_XXX prefixes all messages with "libertas: "

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/persistcfg.c b/drivers/net/wireless/libertas/persistcfg.c
index 6cf5e394..6d0ff8d 100644
--- a/drivers/net/wireless/libertas/persistcfg.c
+++ b/drivers/net/wireless/libertas/persistcfg.c
@@ -188,7 +188,7 @@
 		return ret;
 
 	if (defs.meshie.val.mesh_id_len > IW_ESSID_MAX_SIZE) {
-		printk(KERN_ERR "Inconsistent mesh ID length");
+		lbs_pr_err("inconsistent mesh ID length");
 		defs.meshie.val.mesh_id_len = IW_ESSID_MAX_SIZE;
 	}