[U-Boot] arm: at91: ether: cleanup MAC setting

[Jens Scharsig]

> Hi Reinhard,
> 
> 
> What about this [1] patch?
> 
> Are there any issues with it? Will you take it?
> 
> 
> [1] - http://patchwork.ozlabs.org/patch/93639/
> 
> 
Dear Igor Grinberg,

please read doc/README.at91-soc. The goal of atmel rework is join all
trees to reduce duplicate code. So, do not change anything in
arm920t/at91rm9200. Please convert your board to use arm920t/at91 soc.

See at91rm9200ek or eb_cpux9k2 for an example.

Best regards

Jens Scharsig