[IPV6]: Preserve procfs IPV6 address output format

Procfs always output IPV6 addresses without the colon
characters, and we cannot change that.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index dfb4f14..d328d59 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2644,7 +2644,7 @@
 {
 	struct inet6_ifaddr *ifp = (struct inet6_ifaddr *)v;
 	seq_printf(seq,
-		   NIP6_FMT " %02x %02x %02x %02x %8s\n",
+		   NIP6_SEQFMT " %02x %02x %02x %02x %8s\n",
 		   NIP6(ifp->addr),
 		   ifp->idev->dev->ifindex,
 		   ifp->prefix_len,