misc: Update RELEASE-NOTES.md for v22.1.0.0

Change-Id: I28753f24742ca156e19ac2af4fb302f9de20e852
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/66391
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Matthew Poremba <matthew.poremba@amd.com>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
1 file changed