stddef.h: Use compiler macros for built-in integer types

ptrdiff_t, wchar_t, and wint_t are all integer types built-in to the C
language (as opposed to being library-only types defined in a header).
In the past we had to define these typedefs ourselves because of romcc,
but now that it's gone we should use the GCC-provided macros to select
the types the compiler expects.

Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Change-Id: I0874eddf780b6e41ce773ad8b4faa595e4bbd8a7
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55260
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

0 files changed, 0 insertions, 0 deletions