This adds support for the MMD access registers the RTL-SoCs use to access clause 45
PHYs via mdio.
This new interface is used to add EEE-support for the RTL8226
Signed-off-by: Birger Koblitz <git@birger-koblitz.de>
This adds support for the internal SerDes of the RTL9300 SoC
and for the RTL8218D and RTL8226B phys found in combination
with this SoC in switches.
Signed-off-by: Birger Koblitz <git@birger-koblitz.de>