UPSTREAM: net: Add a netdev software feature set that defaults to off.

The previous patch added the NETIF_F_GRO_FRAGLIST feature.
This is a software feature that should default to off.
Current software features default to on, so add a new
feature set that defaults to off.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Bug: 167707933
Change-Id: Ie56e82a2b2ba3ebd4fded1d865070ddcd311a26a
(cherry picked from commit 1a3c998f)
Signed-off-by: Hyunsoon Kim <h10.kim@samsung.com>