OCC firinit: Bug fix in reset path

    - In reset path.. we enable OCC HB notify because when occ halts. the
interrupt should be send to PGPE. But in this path we are overwriting the
existing action register values.

Change-Id: I8825d0b237be99147afa2d477e4ac342571e9a4f
CQ:SW476322
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/86994
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Gregory S Still <stillgs@us.ibm.com>
Reviewed-by: Daniel M Crowell <dcrowell@us.ibm.com>
Reviewed-by: Jennifer A Stofer <stofer@us.ibm.com>
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/86996
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>

src/import/chips/p9/procedures/hwp/pm/p9_pm_occ_firinit.C

@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2015,2018                        */
+/* Contributors Listed Below - COPYRIGHT 2015,2020                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
 /*                                                                        */
@@ -202,11 +202,15 @@ fapi2::ReturnCode pm_occ_fir_reset(
                            i_target, firinit_done_flag),
              "ERROR: Failed to fetch the entry status of FIRINIT");
 
+    // Here we need to read all the OCC fir registers (action0/1,mask,fir)
+    // and will be stored in the respective class variable. So that below when
+    // we call put function it will be read modify write.
+    FAPI_TRY(l_occFir.get(p9pmFIR::REG_ALL),
+             "ERROR: Failed to get the OCC FIR/MASK/ACTION0/ACTION1 value");
+
     if (firinit_done_flag
         == fapi2::ENUM_ATTR_PM_FIRINIT_DONE_ONCE_FLAG_FIRS_INITED)
     {
-        FAPI_TRY(l_occFir.get(p9pmFIR::REG_FIRMASK),
-                 "ERROR: Failed to get the OCC FIR MASK value");
 
         /* Fetch the OCC FIR MASK; Save it to HWP attribute; clear its contents */
         FAPI_TRY(l_occFir.saveMask(),