Including arch/cpu.h is needed to have the declaration for cpuid_eax.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ic22aba062117e3afa818fa2fc39cb0738e6a1612
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57725
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>