[XS] Change in coreboot[main]: stddef.h: Introduce nullptr constant

[Elyes Haouas (Code Review)]

Attention is currently required from: Jakub Czapiga, Martin L Roth, Nico Huber.

Hello Jakub Czapiga, Martin L Roth, Nico Huber, build bot (Jenkins),

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/83459?usp=email

to look at the new patch set (#25).

Change subject: stddef.h: Introduce nullptr constant
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stddef.h: Introduce nullptr constant

GCC-13 introduced the nullptr constant. Use it when compiling with the
C23 standard.

Change-Id: I07db866bebfd25f1a60d18a3228ada2957500234
Signed-off-by: Elyes Haouas 
---
M src/include/stddef.h
1 file changed, 6 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/59/83459/25