mem-ruby: reuse existing event on CleanUnique

Reuse the existing MaintainCoherence event to schedule
writebacks or cache fill after a CleanUnique.

JIRA: https://gem5.atlassian.net/browse/GEM5-1195

Change-Id: I127ebf78736b8312ccf2b18cf7c586eb5a77f373
Signed-off-by: Tiago Mück <tiago.muck@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/57393
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
1 file changed