rtnl: use nla_put_u64_64bit()

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index ba69d44..5fdd3a4 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -666,6 +666,7 @@
 	IFLA_VF_STATS_TX_BYTES,
 	IFLA_VF_STATS_BROADCAST,
 	IFLA_VF_STATS_MULTICAST,
+	IFLA_VF_STATS_PAD,
 	__IFLA_VF_STATS_MAX,
 };