Merge branch 'thunderx-DMAC-filtering'

Vadim Lomovtsev says:

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net: thunderx: implement DMAC filtering support

By default CN88XX BGX accepts all incoming multicast and broadcast
packets and filtering is disabled. The nic driver doesn't provide
an ability to change such behaviour.

This series is to implement DMAC filtering management for CN88XX
nic driver allowing user to enable/disable filtering and configure
specific MAC addresses to filter traffic.

Changes from v1:
build issues:
 - update code in order to address compiler warnings;
checkpatch.pl reported issues:
 - update code in order to fit 80 symbols length;
 - update commit descriptions in order to fit 80 symbols length;
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Signed-off-by: David S. Miller <davem@davemloft.net>