util: Rename recently renamed namespaces

These namespaces were recently renamed, but the
renames were not applied here.

Change-Id: I3093f193e835f81e1beca538cbca6a0751f6c21b
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/46541
Reviewed-by: Gabe Black <gabe.black@gmail.com>
Maintainer: Gabe Black <gabe.black@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
11 files changed