[U-Boot] [PATCH v2 1/2] mx28: Split the README into a common part and a m28 specific part

[Marek Vasut]

Dear Fabio Estevam,

> Split the README into a common part and a m28 specific part.
> 
> This will make things easier when adding new README files for other mx28
> based boards.
> 
> Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>

Acked-by: Marek Vasut <marex at denx.de>

Best regards,
Marek Vasut