Revert "sky2: don't do GRO on second port"
This reverts commit de6be6c1f77798c4da38301693d33aff1cd76e84.
After some discussion with Jarek Poplawski and Eric Dumazet, we've
decided that this change is incorrect.
Signed-off-by: David S. Miller <davem@davemloft.net>