new_variant: add support for neried/nivviks (nissa ref design)

BUG=b:229550821
TEST=./new_variant_fulltest.sh nereid &&
     ./new_variant_fulltest.sh nivviks &&
     echo PASS

Cq-Depend: chrome-internal:5089197
Change-Id: I8bc7d0d27c6611dc83e82e1a1157a9eff989a34d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/3596360
Commit-Queue: Shou-Chieh Hsu <shouchieh@chromium.org>
Tested-by: Shou-Chieh Hsu <shouchieh@chromium.org>
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Reviewed-by: Reka Norman <rekanorman@chromium.org>
5 files changed