Fix problems with Holly's DT representation of ethernet PHYs

[Segher Boessenkool]

> Waah!  Third time lucky?

You wish :-)

> 	- Second, the PHYs give only "bcm54xx" as a compatible
> property.  This is unfortunate, because there are many bcm54xx PHY
> models, and they have differences which can matter.  We add a more
> precise compatible string, giving the precise PHY model (bcm5461A in
> this case).

You completely removed the "compatible" properties instead.
Bad idea.


Segher