Reset ATTR_SPCWKUP_COUNT to 0 at start of MPIPL

We were seeing issues in the newly added PM_RESET call in istep 21.
This was happening because if the SKIP_WAKEUP attribute is not set
then PM_RESET will attempt to enable special_wakeup on all of the
EX targets before enabling auto-special wakeup. We are then expecting
special wakeup done bit to be set on all of th EX targets prior
to enabling auto-special wakeup on the target. IF SPCWKUP_COUNT is
still set to a non-zero value from the previous IPL the call to
enable special_wakeup will result in a no-op so the special wkup
done bit will never be set in the GPMMR. This causes to call to
enable auto-special wakeup  to fail

Change-Id: Iabdb5099ea9d6eb195003697de8ca074804d2d98
CQ: SW446135
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/66430
Reviewed-by: Matt Derksen <mderkse1@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

src/usr/targeting/targetservicestart.C

@@ -568,6 +568,22 @@ static void initializeAttributes(TargetService& i_targetService,
                 membuf->setAttr<ATTR_IBSCOM_VIRTUAL_ADDR>(0);
             }
 
+            TARGETING::PredicateCTM l_eqFilter(CLASS_UNIT, TYPE_EQ);
+            TARGETING::PredicateCTM l_exFilter(CLASS_UNIT, TYPE_EX);
+            TARGETING::PredicateCTM l_ecFilter(CLASS_UNIT, TYPE_CORE);
+            TARGETING::PredicatePostfixExpr l_wakeupTargFilter;
+            l_wakeupTargFilter.push(&l_eqFilter).push(&l_exFilter).Or().push(&l_ecFilter).Or();
+            TargetHandleList l_wakeupTargs;
+            i_targetService.getAssociated( l_wakeupTargs,
+                                           l_pTopLevel,
+                                           TargetService::CHILD_BY_AFFINITY,
+                                           TARGETING::TargetService::ALL,
+                                           &l_wakeupTargFilter);
+            for (auto & l_targ : l_wakeupTargs)
+            {
+                l_targ->setAttr<ATTR_SPCWKUP_COUNT>(0);
+            }
+
             // HYPCOMM section is only present for master node
             if ( TARGETING::UTIL::isCurrentMasterNode() )
             {