Add the stdint.h header, and drop the GLIBC section from amdfwtool.h to build this tool on FreeBSD as well as Linux. Signed-off-by: Idwer Vollering <vidwer@gmail.com> Change-Id: I295fd308b0f5e2902931f02c9455823a614976de Reviewed-on: https://review.coreboot.org/c/coreboot/+/48977 Reviewed-by: Felix Held <felix-coreboot@felixheld.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>