[U-Boot] mkconfig "arch" link generation

[Matteo Facchinetti]

Hi,

I'm updating my uboot to mainline and I have a question about a link 
generate from mkconfig (with mpc5121_config).
Follwing link in "include/asm", I found a link named "arch" genarated by 
mkconfig.
This is broken so point to "arch-mpc512x" instead of 
"arch/powerpc/cpu/mpc512x".
Result is "#include <asm/arch/asm-offsets.h>" or similar are be broken.

How is the correct way to modify mkconfig?
I don't understand mean of link points "arch-mpc512x".

Regards,

Matteo Facchinetti