tests: Add test for the lupv example

Change-Id: Ib17f59b5b6ab9704be14e73d203bbab61caada90
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/53903
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2 files changed