Don't use the silicon-specific struct type to get common config
options. Instead, use the generic config_t typedef. This allows
the function to be moved to common code in upcoming patches.
Change-Id: If80b678037b4d79387e0a0f722c540df4aae2416
Signed-off-by: Marc Jones <marcjones@sysproconsulting.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46057
Reviewed-by: Jay Talbott <JayTalbott@sysproconsulting.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>