Deassert PM_EXIT on core0 of both EXs of master EQ
Deassert PM_EXIT on core0 of both EXs of master EQ

During MPIPL the PM_EXIT bit was being left on the master core.
This caused issues when we try to winkle the master core during
istep 16.1

Change-Id: I5a74c0cdc0546bc1d973ee4be9496419dd3adc5a
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/37907
Tested-by: Jenkins Server <8e3f934e4c44875bc48d33da3ea13d93ba9a233f@us.ibm.com>
Tested-by: FSP CI Jenkins <aa9e4d9ac7cd25905e9c0dd36d4150516e73dd86@us.ibm.com>
Tested-by: Jenkins OP Build CI <e610bd72261d3c0a48f1e8ae36832ab00774d426@us.ibm.com>
Reviewed-by: YUE DU <be312ad93b9ad4a5a20c1d9e86951b5929a52e94@us.ibm.com>
Reviewed-by: Gregory S. Still <4249770c9038596e9483266bcd48707ac69ee60b@us.ibm.com>
Reviewed-by: Martin Gloff <df0a4963746ae04ab678d064fccc7ee68adfd751@us.ibm.com>
Reviewed-by: Matthew A. Ploetz <9c4e62337697f225e3360ddd1441dbba069477f9@us.ibm.com>

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