base: Update the version to v22.0.0.0

Change-Id: I945304167e3835d3492cb2b81e22372608cb89a5
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/60529
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2 files changed