Leverage in Puff to avoid diskswap variants. Later this could become
part of the baseboard definition and hatch diskswap variants migrated
over to use it as well.
BUG=b:149171631
BRANCH=none
TEST=Swap between x4 NVMe drives and 2x2 Teton Glacier hybrid drives and
run lsblk, lspci, and nvme tools to confirm dynamic PCIe configuration
on Puff.
Change-Id: Ie87f0823f28457db397d495d9f1629d85cfd5215
Signed-off-by: Edward O'Callaghan <quasisec@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39041
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
9bffbc0873