amd/stoneyridge: Add SMU firmware blobs to cbfs

Stoney Ridge supports two different sets of SMU firmware, one for
either fanless OPNs and one for fanned.

Add a Kconfig mechanism to select the proper set and add the blobs
into cbfs.

BUG=b:66339938

Change-Id: I8510823e2232b74ec6fe001cc28953f53b2aa520
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/22057
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2 files changed