ATTN: IPOLL interrupt workaround
ATTN: IPOLL interrupt workaround

Circumvents issue where interrupts happen before OPAL is ready
to handle them

Change-Id: I3d378cd03dac51aaa5b2f77e8940eb63f170016b
Reviewed-on: http://gfw160.aus.stglabs.ibm.com:8080/gerrit/17795
Reviewed-by: A. Patrick Williams III <c87e37b1a4035affd737b461af89fb722d635f4d@us.ibm.com>
Tested-by: Jenkins Server

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