Configure the IOMMU support upd if iommu is enabled.
BUG=b:194173037
Cq-Depend: chrome-internal:4027293,4027294
Signed-off-by: Jason Glenesk <jason.glenesk@amd.corp-partner.google.com>
Change-Id: I56b433cdc1ca5459c51b4b764e22292bd27b8892
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56770
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>