[PATCH] arm: mvebu: Update docs for Allied Telesis x220

[Chris Packham]

On Fri, 3 Jul 2026, 11:40 am Chris Packham, <judge.packham at gmail.com> wrote:

> The current documentation doesn't work as-is for extracting the DDR
> training binary from the vendor bootloader. There are some seemingly
> undocumented alignment requirements that we need to meet by padding the
> binary file. Add some instructions on how to do this with objcopy. Also
> fix a minor spelling mistake while we're here.
>
> Signed-off-by: Chris Packham <judge.packham at gmail.com>
> ---
>  board/alliedtelesis/x220/binary.0 | Bin 423 -> 77772 bytes
>

Whoops looks like I included the result of running the command. I'll send a
much smaller v2.