stdlib,configs: Update simpoint example to use the Workload

With the inclusion of the "x86-print-this-15000-with-simpoints"
workloads (introduced here:
https://gem5-review.googlesource.com/c/public/gem5-resources/+/64531)
This patch utilizes this workload for the simpoint examples.

Change-Id: I5e2c4a48206fd7108a33a4a64ac64235ea9f1f33
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/64552
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
3 files changed