Rework Rome detection and add multiple network ports models (#274)

* Rework Rome detection and add multiple network ports models

* Remove unused opCount in p2p transport

tools/topo_expl/topo_expl.cpp

@@ -105,6 +105,8 @@ NodeModelDesc model_descs[] = {
   {4, "topo_8p_ts1_n4_1.xml",   "4 nodes 8 VEGA20 TS1 NPS=4 Alt. Model"},
   {1, "topo_4p3l_ia.xml",       "single node 8 gfx908"},
   {4, "topo_4p3l_ia.xml",       "4 nodes 8 gfx908"},
+  {4, "topo_8p_rome_n2_2.xml",  "4 nodes 8 VEGA20 Rome NPS=2 Alt. Model 2 NET/IF"},
+  {4, "topo_8p_ts1_n4_2.xml",   "4 nodes 8 VEGA20 TS1 NPS=4 3 NET/IF"},
 };
 
 int main(int argc,char* argv[])