net: add info struct for LAG changeupper

net: add info struct for LAG changeupper

This struct will be shared by bonding and team to pass internal
information to notifier listeners.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 764f5e544118508add420724789f46e04dba91eb)
Orabug: 28122104
Signed-off-by: Vijay Balakrishna <vijay.balakrishna@oracle.com>
Reviewed-by: Si-Wei Liu <si-wei.liu@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: Brian Maly <brian.maly@oracle.com>
Conflicts:
	include/linux/netdevice.h
(cherry-pick merge included unrelated lines immediately before
related code)

Signed-off-by: Brian Maly <brian.maly@oracle.com>