Julius Werner has posted comments on this change. ( https://review.coreboot.org/19622 )
Change subject: src/include: remove the __ROMCC__ to enable snprintf ......................................................................
Patch Set 3:
I don't understand why you need this? __ROMCC__ should not be defined for ARM boards at all. I mean, I don't know if this patch makes sense or not on its own (I don't know much about ROMCC), but I am pretty certain that it has nothing to do with what you really want to do.
Looks like vsprintf was already added to all stages recently (https://review.coreboot.org/19366), so you won't need to do anything extra there. Sorry for misleading you.