[U-Boot] [PATCH v2 resend 0/1] cmd_boot: Add a poweroff command

[Hans de Goede]

Hi Tom,

This patch is a prereq of the board poweroff patches I've pending for
sunxi, since it is a core patch I would prefer for you to merge it
directly, rather then "sneak it in" in a sunxi pull-req.

This is a resend of v2 of the patch which contains the changes you
requested.

Regards,

Hans