[U-Boot] [PATCH] miiphy: Add function to retrieve MDIO bus list head

[Joe Hershberger]

On Mon, Sep 17, 2018 at 11:45 PM Pankaj Bansal <pankaj.bansal at nxp.com> wrote:
>
> In upcoming freescale board LX2160AQDS, the MDIO bus is muxed.
> i.e. same MDIO bus can be routed to eight different slots depending
> on mux register settings.
>
> To support this mdio mux behavior, we add each MDIO bus mux as a
> separate MDIO bus.
>
> Now, various phy devices can be attached to each of these slots(mux).
> The information about these devices is passed to OS via device tree.
>
> To do the fdt fixups related to MDIO bus, its necessary that MDIO bus
> list is accessed.Therefore, add a function to retrieve the list head.
>
> Signed-off-by: Pankaj Bansal <pankaj.bansal at nxp.com>

Acked-by: Joe Hershberger <joe.hershberger at ni.com>