configs,tests: Update tests/configs for RISCV boot workload

As of this commit:
https://gem5-review.googlesource.com/c/public/gem5-resources/+/62659
we have a RISCV Ubuntu 20.04 boot workload. This patch applies it to
test scripts and example scripts where appropriate.

Change-Id: Ibf9bed1a978b6d2e456b528f64cf3a9d6dc0e568
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/62664
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2 files changed