Clear out bogus EVENT_N in scominit

Change-Id: I499ca00f6840a3906260a13d3366aec64da67bdd
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/41512
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Marc Gollub <gollub@us.ibm.com>
Reviewed-by: STEPHEN GLANCY <sglancy@us.ibm.com>
Reviewed-by: Louis Stermole <stermole@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/41514
Reviewed-by: Hostboot Team <hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

src/import/chips/p9/procedures/hwp/memory/lib/fir/unmask.C

@@ -185,6 +185,7 @@ fapi2::ReturnCode after_scominit( const fapi2::Target<TARGET_TYPE_MCBIST>& i_tar
         FAPI_TRY(l_mca_fir_reg.clear<MCA_IOM_PHY0_DDRPHY_FIR_REG_ERROR_4>());
 
         FAPI_TRY(l_cal_fir_reg.clear<MCA_MBACALFIRQ_RCD_PARITY_ERROR>());
+        FAPI_TRY(l_cal_fir_reg.clear<MCA_MBACALFIRQ_DDR_MBA_EVENT_N>());
 
         // No need to write after clearing - the clear does the read/modify/write.
     }