Merge branch 'arc_emac-next'

Beniamino Galvani says:

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arc_emac: promiscuous/multicast mode and netpoll support

These patches add support for promiscuous mode, multicast filtering
and netpoll to the ARC EMAC driver.

They were both tested on a Radxa Rock board which uses a ARC EMAC IP
core integrated in the Rockchip RK3188 SoC.
====================

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