mem-cache: add option to send pf on hit on pf

From the point of view of the prefetchers, a hit on a prefetched block
should be considered the same as a miss: a new prefetch should be
generated.

Change-Id: If865324502b81cfd3ae8c009666d3f498092b90f
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/47201
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Maintainer: Daniel Carvalho <odanrc@yahoo.com.br>
4 files changed