Change in coreboot[master]: include: always unsigned long for size_t

[Julius Werner (Code Review)]

Attention is currently required from: Paul Menzel, Jacob Garber.
Julius Werner has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/55075 )

Change subject: include: always unsigned long for size_t
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Patch Set 1:

(1 comment)

Patchset:

PS1:
> Yeah, it looks like GCC is using its own definition of size_t when warning about the format modifier […]

Yeah, now I understand what that stuff actually does. In fact, maybe we should be using __PTRDIFF_TYPE__ and __UINTPTR_TYPE__ as well instead of what we're doing for those at the moment. Right now, on arm32, the type you get from the expression (NULL - NULL) isn't actually the same thing that we defined as ptrdiff_t... it ends up being the same length so it doesn't really matter, but it's still technically incorrect.