Where possible we are trying to use the ALL/gem5.opt compilation of gem5. This change updates the riscvmatched tests to this. Change-Id: I1c5f1d86cdf5cf29b8964f8a894a3476a7cb290a Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/65854 Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu> Maintainer: Bobby Bruce <bbruce@ucdavis.edu> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/65975