soc_binding.h includes FSP headers which define NULL macro. Because of this, including stddef.h after soc_binding.h results in NULL being re-defined. Thus, include stddef.h in soc_binding.h to avoid having users include stddef.h along with soc_binding.h. Change-Id: I600083c5d8f672518beaa1119f14f67728a433aa Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/17773 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>