r8169: allow multicast packets on sub-8168f chipset.

RTL_GIGA_MAC_VER_35 includes no multicast hardware filter.

Signed-off-by: Nathan Walp <faceprint@faceprint.com>
Suggested-by: Hayes Wang <hayeswang@realtek.com>
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>