s390/ctcm: fix format string

The second parameter as specified by the format string is actually a
string not an integer.
Acked-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/s390/net/ctcm_fsms.c

@@ -1406,7 +1406,7 @@ static void ctcmpc_chx_rx(fsm_instance *fi, int event, void *arg)
 
 		if (new_skb == NULL) {
 			CTCM_DBF_TEXT_(MPC_ERROR, CTC_DBF_ERROR,
-				"%s(%d): skb allocation failed",
+				"%s(%s): skb allocation failed",
 						CTCM_FUNTAIL, dev->name);
 			fsm_event(priv->mpcg->fsm, MPCG_EVENT_INOP, dev);
 					goto again;