Move numInsts, numBranches, numNop, numRefs, numLoadInsts, numRate to Base. Merged numRefs into numMemRefs of ExecuteCPUStats. Renamed numRate to instRate. Updated formatting in ExecuteCPUStats group. Change-Id: Ibe4c121ac1e04f1c989d4786a52acd5878a43df0 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/69103 Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu> Maintainer: Bobby Bruce <bbruce@ucdavis.edu>