Configure CPU PCIe RP and IOM per variant.
Change-Id: I9c38af42206497dbb9436e9f2b8aff46fa4d3fb9
Signed-off-by: Tim Crawford <tcrawford@system76.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71558
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jeremy Soller <jeremy@system76.com>