atm: Convert pr_warning to pr_warn

Use the more common pr_warn.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/atm/common.c b/net/atm/common.c
index 7b49100..6a76515 100644
--- a/net/atm/common.c
+++ b/net/atm/common.c
@@ -300,7 +300,7 @@
 		max_sdu = ATM_MAX_AAL34_PDU;
 		break;
 	default:
-		pr_warning("AAL problems ... (%d)\n", aal);
+		pr_warn("AAL problems ... (%d)\n", aal);
 		/* fall through */
 	case ATM_AAL5:
 		max_sdu = ATM_MAX_AAL5_PDU;