net: sxgbe: add EEE(Energy Efficient Ethernet) for Samsung sxgbe

Added support for the EEE(Energy Efficient Ethernet) in 10G ethernet driver.

Signed-off-by: Girish K S <ks.giri@samsung.com>
Neatening-by: Joe Perches <joe@perches.com>
Signed-off-by: Byungho An <bh74.an@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc drivers/net/ethernet/samsung/sxgbe/sxgbe_common.h
Simple merge

diff --cc drivers/net/ethernet/samsung/sxgbe/sxgbe_core.c
Simple merge

diff --cc drivers/net/ethernet/samsung/sxgbe/sxgbe_ethtool.c
Simple merge

diff --cc drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c
Simple merge

diff --cc drivers/net/ethernet/samsung/sxgbe/sxgbe_platform.c
Simple merge

diff --cc drivers/net/ethernet/samsung/sxgbe/sxgbe_reg.h
Simple merge