[IPV6]: Do not set IF_READY if device is down

Now that we add the IPv6 device at registration time we don't need
to set IF_READY in ipv6_add_dev anymore because we will always get
a NETDEV_UP event later on should the device ever become ready.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv6/addrconf.c

@@ -342,10 +342,6 @@ static struct inet6_dev * ipv6_add_dev(struct net_device *dev)
 	}
 #endif
 
-	if (netif_carrier_ok(dev))
-		ndev->if_flags |= IF_READY;
-
-
 	ipv6_mc_init_dev(ndev);
 	ndev->tstamp = jiffies;
 #ifdef CONFIG_SYSCTL