Merge branch 'net-ethernet-ti-cpsw-fix-mcast-packet-lost'

Ivan Khoronzhuk says:

====================
net: ethernet: ti: cpsw fix mcast packet lost

The patchset omits redundant refresh of mcast address table and
prevents mcast packet lost.

Based on net-next/master
tested on am572x evm
====================

Signed-off-by: David S. Miller <davem@davemloft.net>