Get new_emac driver running on 405EP

[Markus Brunner]

On Monday 14 April 2008, Benjamin Herrenschmidt wrote:
> > 2) On the 405EP only the MDIO pin of the emac0 is pinned out, so both
> > phys have to be accessed through this one. This affectes the mdio
> > read/write functions.
>
> The later can easily be described in the device-tree as it's a fairly
> common setup.

mdio-device does the trick. This feature wasn't used by any other board in the 
kernel yet.

I made another error. I did mix up the order of the MAL irqs, so the irq 
handlers went mad. This was detected as a soft lock-up.

After correcting that both emacs are working on ppc405EP :).

Regards

Markus