Added option to use a chiplet level target when flushing L2
Added option to use a chiplet level target when flushing L2

Change-Id: I1a31d574a15f1c40f9ea464776441c28347c06e5
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/355
Reviewed-by: Thi N. Tran <25a2bca7ae5a8ea03be09ca8d282480c08c13052@us.ibm.com>
Tested-by: Jenkins Server

Over-enthusiastic/hostboot,Over-enthusiastic/hostboot,alvintpwang/hostboot,Over-enthusiastic/hostboot,csmart/hostboot,csmart/hostboot,alvintpwang/hostboot,alvintpwang/hostboot,csmart/hostboot,open-power/hostboot,Over-enthusiastic/hostboot,open-power/hostboot,alvintpwang/hostboot,csmart/hostboot,csmart/hostboot,open-power/hostboot,alvintpwang/hostboot,open-power/hostboot,open-power/hostboot,Over-enthusiastic/hostboot