hwloc: x86: use Group instead of Misc for unknown x2apic levels

Misc are reserved for annotating the topology, the core
doesn't like merging them. Group is more appropriate.

(cherry picked from commit open-mpi/hwloc@3c47649591)
Signed-off-by: Jeff Squyres <jsquyres@cisco.com>

opal/mca/hwloc/hwloc191/hwloc/src/topology-x86.c

@@ -401,6 +401,7 @@ static void summarize(hwloc_topology_t topology, struct procinfo *infos, unsigne
   unsigned i, j, l, level, type;
   unsigned nbsockets = 0;
   int one = -1;
+  unsigned next_group_depth = topology->next_group_depth;
 
   for (i = 0; i < nbprocs; i++)
     if (infos[i].present) {
@@ -580,9 +581,12 @@ static void summarize(hwloc_topology_t topology, struct procinfo *infos, unsigne
 	      hwloc_bitmap_clr(unknowns_cpuset, j);
 	    }
 	  }
-	  unknown_obj = hwloc_alloc_setup_object(HWLOC_OBJ_MISC, unknownid);
+	  unknown_obj = hwloc_alloc_setup_object(HWLOC_OBJ_GROUP, unknownid);
 	  unknown_obj->cpuset = unknown_cpuset;
 	  unknown_obj->os_level = level;
+	  unknown_obj->attr->group.depth = topology->next_group_depth + level;
+	  if (next_group_depth <= topology->next_group_depth + level)
+	    next_group_depth = topology->next_group_depth + level + 1;
 	  hwloc_debug_2args_bitmap("os unknown%d %u has cpuset %s\n",
 	      level, unknownid, unknown_cpuset);
 	  hwloc_insert_object_by_cpuset(topology, unknown_obj);
@@ -714,6 +718,7 @@ static void summarize(hwloc_topology_t topology, struct procinfo *infos, unsigne
   }
 
   hwloc_bitmap_free(complete_cpuset);
+  topology->next_group_depth = next_group_depth;
 }
 
 static int