be2net: csum, tso and rss steering offload support for VxLAN

This patch mainly implements the add/del_vxlan_port() methods by invoking
the needed FW cmds for supporting VxLAN offloads for Skyhawk-R.

Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc drivers/net/ethernet/emulex/benet/be.h
Simple merge

diff --cc drivers/net/ethernet/emulex/benet/be_hw.h
Simple merge

diff --cc drivers/net/ethernet/emulex/benet/be_main.c
Simple merge