Revert "drivers/net: Disable UFO through virtio"

This reverts commit 3d0ad09412ffe00c9afa201d01effdb6023d09b4.

Now that GSO functionality can correctly track if the fragment
id has been selected and select a fragment id if necessary,
we can re-enable UFO on tap/macvap and virtio devices.

Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc drivers/net/macvtap.c
Simple merge

diff --cc drivers/net/tun.c
Simple merge

diff --cc drivers/net/virtio_net.c
Simple merge