Fix problems with Holly's DT representation of ethernet PHYs

[Benjamin Herrenschmidt]

On Mon, 2007-05-28 at 13:07 +0200, Segher Boessenkool wrote:
> > In that case however, the 54xx are fairly different from each other, so
> > please use something more specific.
> 
> _Never_ use the "xx" stuff, it's meaningless.

Pretty much yeah... either you are compatible with a precise version
(the first one of the serie, like an hypothetical 5400) or you are not
in which case you have your precise model name in there.

Ben.