[U-Boot] Fix for a build ?

[Sylvain Lamontagne]

Hi Igor Luri,

> We solve this problem building U-Boot and failing projects passing "-j
> 1" argument to Make (without running simultaneous jobs), and the rest of
> software with "-j 9".
>
Your suggestion solved the problem for us, thank you very much.

> Hope this helps.
It did :) again thank you
>
> Peace.
Have a wonderful day

Sylvain