ipv6: correct the ipv6 option name - Pad0 to Pad1

The padding destination or hop-by-hop option is called Pad1 and not Pad0.

See RFC2460 (4.2) or the IANA ipv6-parameters registry:
http://www.iana.org/assignments/ipv6-parameters/ipv6-parameters.xml

Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/mip6.c b/net/ipv6/mip6.c
index 2e02f7c..5b087c3 100644
--- a/net/ipv6/mip6.c
+++ b/net/ipv6/mip6.c
@@ -46,7 +46,7 @@
 	if (!data)
 		return NULL;
 	if (padlen == 1) {
-		data[0] = IPV6_TLV_PAD0;
+		data[0] = IPV6_TLV_PAD1;
 	} else if (padlen > 1) {
 		data[0] = IPV6_TLV_PADN;
 		data[1] = padlen - 2;