gem5 version 21.2.1.1
misc: Update RELEASE-NOTES.md for v21.2.1.1

Change-Id: I35e511a33fb4fd0327188602174ccb906efbb0eb
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/59271
Tested-by: kokoro <noreply+kokoro@google.com>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
1 file changed