phylib: add driver for Teranetics TN2020

Teranetics TN2020 is compliant with IEEE 802.3an 10 Gigabit.

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc drivers/net/phy/Kconfig
Simple merge

diff --cc drivers/net/phy/Makefile
Simple merge

diff --cc drivers/net/phy/teranetics.c
Simple merge