mem-cache: Fix RandomReplData

Random replacement policy's data was being instantiated with
the incorrect class.

Change-Id: Ib573a6b5a63868d6069997c6279bec3b10c6b9b9
Reviewed-on: https://gem5-review.googlesource.com/10623
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com>
1 file changed