Fix booting with SMP enabled, when specifying more CPUs than supported by the code. Change-Id: Ib3d7c1a1a7a8633d4d434ccbd46cf92b0074b724 Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/50235 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>