Update the interrupt routing for the Slave proc
Update the interrupt routing for the Slave proc

During Hostboot we route all interrupts to the master proc.
During the MPIPL we send a PSU chip op to the SBE, if the slave
isnt set up to route to the master proc then we get a xstop.
This fix makes sure we update the slave proc's interrupt routing
on the MPIPL path

Change-Id: I41e2728e049128e631537fe016d4402264739f23
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/40181
Reviewed-by: William G. Hoffa <7dd6aa5e78423995d9d7c7ecada5b77ee07f88cc@us.ibm.com>
Reviewed-by: Martin Gloff <df0a4963746ae04ab678d064fccc7ee68adfd751@us.ibm.com>
Tested-by: Jenkins Server <8e3f934e4c44875bc48d33da3ea13d93ba9a233f@us.ibm.com>
Tested-by: Jenkins OP Build CI <e610bd72261d3c0a48f1e8ae36832ab00774d426@us.ibm.com>
Tested-by: FSP CI Jenkins <aa9e4d9ac7cd25905e9c0dd36d4150516e73dd86@us.ibm.com>
Reviewed-by: Daniel M. Crowell <912029ca9254ac7b5854e56910561d682e1fa2d0@us.ibm.com>

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