add phy-handle property for fec_mpc52xx

[Paul Mackerras]

David Woodhouse writes:

> It would be much better if the kernel would 'just work'. The ideal way
> of achieving that is for the firmware to be fixed -- but that's been
> promised for a long time now, and we just don't believe you any more. So
> working round it in the kernel seems to be the next best option.

Does the efika use a boot wrapper?  If so then putting the fixup in
the boot wrapper might be better.

Paul.