kirkwood stack size

[Tony Dinh]

Hi Marek,

In reference to:
https://lists.denx.de/pipermail/u-boot/2021-October/465221.html

I have several Kirkwood boards, and currently support these boards in
mainline: Sheevaplug, Zyxel NSA310S, GoFlex Home, Dockstar. I also
have a few out-of-tree Kirkwood u-boots that have not been submitted
for mainline yet.

I did not see the stack size problem, or any other problem. And I'm
running the 2021.07 version.

Regards,
Tony