selinux: Cleanup printk logging in netlink

Replace printk with pr_* to avoid checkpatch warnings.
Signed-off-by: Peter Enderborg <peter.enderborg@sony.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>

security/selinux/netlink.c

@@ -94,7 +94,7 @@ static void selnl_notify(int msgtype, void *data)
 out_kfree_skb:
 	kfree_skb(skb);
 oom:
-	printk(KERN_ERR "SELinux:  OOM in %s\n", __func__);
+	pr_err("SELinux:  OOM in %s\n", __func__);
 	goto out;
 }