PRD: Mask SBE attention on HB recovery failure
PRD: Mask SBE attention on HB recovery failure

Change-Id: Iff8c191b25fe3cefef9724471d050287309d7efa
CQ:SW425349
Backport: op920
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/57354
Tested-by: Jenkins Server <8e3f934e4c44875bc48d33da3ea13d93ba9a233f@us.ibm.com>
Reviewed-by: Matt Derksen <7e9f2fc2ed13c4ee3c2ab17f188630a0f557de86@us.ibm.com>
Reviewed-by: Caleb N. Palmer <4dd1938fbd016e66315ec83516544b027a7e47e1@us.ibm.com>
Reviewed-by: Benjamin J. Weisenbeck <5c9571551d3c5d31d5a99a7e8d72fcb5684103ff@us.ibm.com>
Reviewed-by: Zane C. Shelley <fc96e127d170d6ac0b2af86a8a56f95974ff36e8@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/57509
CI-Ready: Zane C. Shelley <fc96e127d170d6ac0b2af86a8a56f95974ff36e8@us.ibm.com>
Tested-by: Jenkins OP Build CI <e610bd72261d3c0a48f1e8ae36832ab00774d426@us.ibm.com>
Tested-by: FSP CI Jenkins <aa9e4d9ac7cd25905e9c0dd36d4150516e73dd86@us.ibm.com>
Tested-by: Jenkins OP HW <0eb0fff262f74a65a832afbcc7b153e391c9a3fd@us.ibm.com>

open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot