[U-Boot] [RESEND PATCH 2/3] mx28evk: Add 'nandboot' environment command

[Marek Vasut]

Dear Otavio Salvador,

> This reads the kernel, ftd and boot into ubifs filesystem. While on
> that, the SD firmware filename definition has been moved next to the
> other SD related commands.
> 
> Signed-off-by: Otavio Salvador <otavio at ossystems.com.br>

Any changes to built-in environment are now NAKd I believe.

Best regards,
Marek Vasut