STOP: Fix Wakeup terminate prematurely with mixed stop2 and stop4

This bug only impact when one core engages the error path
As one core detects xstop or fail to startclocks, while we
intend to bypass the error core and move on with the good
remaining core, whose wakeup will be lost due to the bug

Key_Cronus_Test=PM_REGRESS

Change-Id: I27012164095b99429d8c46dca5b1c8b3da62e135
CQ: SW420556
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/54833
Tested-by: Cronus HW CI <cronushw-ci+hostboot@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: HWSV CI <hwsv-ci+hostboot@us.ibm.com>
Tested-by: PPE CI <ppe-ci+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Gregory S. Still <stillgs@us.ibm.com>
Dev-Ready: Gregory S. Still <stillgs@us.ibm.com>
Reviewed-by: RANGANATHPRASAD G. BRAHMASAMUDRA <prasadbgr@in.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/54849
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Sachin Gupta <sgupta2m@in.ibm.com>

src/import/chips/p9/procedures/hwp/lib/p9_pm_hcd_flags.h

@@ -119,6 +119,7 @@ enum PM_CME_FLAGS_DEFS
     CME_FLAGS_CORE_QUIESCE_ACTIVE           = 12,
     CME_FLAGS_PM_DEBUG_HALT_ENABLE          = 13,
     CME_FLAGS_WAIT_ON_PSTATE_START          = 14,
+    CME_FLAGS_SPWU_CHECK_ENABLE             = 22,
     CME_FLAGS_BLOCK_ENTRY_STOP11            = 23,
     CME_FLAGS_PSTATES_ENABLED               = 24,
     CME_FLAGS_FREQ_UPDT_DISABLE             = 25,