Add another Rome model (#1354)

[ROCm/rccl commit: e453f1ced9]

projects/rccl/tools/topo_expl/topo_expl.cpp

@@ -160,6 +160,7 @@ NodeModelDesc model_descs[] = {
   {2, "topo_8p1h_6.xml",        "2 nodes 8P1H Alt."},
   {5, "topo_8p_940.xml",        "5 nodes gfx940 8P"},
   {2, "topo_8p_942.xml",        "2 nodes gfx942 8P"},
+  {2, "topo_8p_942_1.xml",      "2 nodes gfx942 8P Alt."},
 };
 
 NCCL_PARAM(MaxCTAs, "MAX_CTAS", MAXCHANNELS);