Fixing dump model ops feature on Windows for MGX EP

Author: Uros Petkovic

onnxruntime/core/providers/migraphx/migraphx_execution_provider.cc

@@ -1082,7 +1082,7 @@ MIGraphXExecutionProvider::GetCapability(const onnxruntime::GraphViewer& graph_v
   // dump onnx file if environment var is set
   if (dump_model_ops_) {
     std::string model_name = graph_viewer.Name() + ".onnx";
-    std::ofstream ofs(model_name);
+    std::ofstream ofs(model_name, std::ios::binary);
     ofs.write(onnx_string_buffer.c_str(), onnx_string_buffer.size());
     ofs.close();
   }
@@ -1335,7 +1335,7 @@ Status MIGraphXExecutionProvider::Compile(const std::vector<FusedNodeAndGraph>&
 
     if (dump_model_ops_) {
       std::string onnx_name = fused_node.Name() + ".onnx";
-      std::ofstream ofs(onnx_name);
+      std::ofstream ofs(onnx_name, std::ios::binary);
       ofs.write(onnx_string_buffer.data(), onnx_string_buffer.size());
       ofs.close();
     }