mem-ruby: notify controller on coalescing

Sequencer notifies controllers when coalescing requests.
notifyCoalesced can be overridden by protocols to, for instance,
account for coalesced requests in hit/miss stats and/or prefetcher
training.

Change-Id: Ia9c8d64cac2cd3ce859a76a1dc1324e3fc6a7b90
Signed-off-by: Tiago Mück <tiago.muck@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/41815
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
3 files changed