Move the i5 variant-specific CFR callbacks out of the baseboard
CFR menu and compile them from the variant directory. This
reduces preprocessor usage in the common file.
Change-Id: Ic03ec18aed100a95d347c49c2b1deecf1c3fd961
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/91458
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>