mlx4: Wake on LAN support

The driver queries the FW for WOL support.
Ethtool get/set_wol is implemented accordingly.
Only magic packets are supported at the time.

Signed-off-by: Igor Yarovinsky <igory@mellanox.co.il>
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc drivers/net/mlx4/en_ethtool.c
Simple merge

diff --cc drivers/net/mlx4/fw.c
Simple merge

diff --cc drivers/net/mlx4/fw.h
Simple merge

diff --cc drivers/net/mlx4/main.c
Simple merge

diff --cc drivers/net/mlx4/mlx4_en.h
Simple merge

diff --cc include/linux/mlx4/device.h
Simple merge