Add 9020 SFF/MT configs using native raminit
    
    Angel's code was rebased for coreboot/default, so it's now
    feasible to have NRI configs for these.
    
    NRI is incomplete, because some training steps are still not
    implemented and S3 is not yet supported, so Libreboot still
    provides the MRC setups as default options, but the NRI is
    nicer to use if it works for you (and you don't need S3).
    
    In Libreboot the policy is always: use fewer blobs if possible.
    
    Signed-off-by: Leah Rowe <leah@libreboot.org>