Cumulus - Disallow group of 6 if mirror is enabled

Change-Id: I7f89edc1e907a5b07a311779a9e751fb42ca40a1
CQ: HW423110
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/48079
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: Joseph J. McGill <jmcgill@us.ibm.com>
Reviewed-by: LENNARD G. STREAT <lstreat@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/48083
Reviewed-by: Hostboot Team <hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Reviewed-by: Christian R. Geddes <crgeddes@us.ibm.com>

src/import/chips/p9/procedures/hwp/nest/p9_mss_eff_grouping.C

@@ -2924,7 +2924,17 @@ fapi2::ReturnCode p9_mss_eff_grouping(
 
     if (l_sysAttrs.iv_groupsAllowed & GROUP_6)
     {
-        grouping_group6PortsPerGroup(l_memInfo, l_groupData);
+        // HW423110 - If mirror (i.e. Cumulus and mirror is enabled)
+        // then do not allow Group of 6
+        if ( (l_memInfo.iv_nimbusProc == false) &&
+             (l_sysAttrs.iv_hwMirrorEnabled) )
+        {
+            FAPI_INF("Group of 6 is not allowed on Cumulus with Mirror enabled");
+        }
+        else
+        {
+            grouping_group6PortsPerGroup(l_memInfo, l_groupData);
+        }
     }
 
     if (l_sysAttrs.iv_groupsAllowed & GROUP_4)