[U-Boot] regression: setting the rpi mac address stopped working

[Gerd Hoffmann]

  Hi,

> https://www.mail-archive.com/u-boot@lists.denx.de/msg241949.html fixes this
> problem.

Tested things today, only to figure it doesn't work :(

Reverting commit "3f66149 Remove extra fdt_fixup_ethernet() call" brings
things into working state.  So the fix above actually works, and
apparently the fdt_fixup_ethernet() call in image_setup_libfdt() isn't
as redundant as it seems ...

cheers,
  Gerd

PS: I'm not on the list, if you want me test any patches please cc me.