[App] Log content root.

src/xenia/app/xenia_main.cc

@@ -163,6 +163,7 @@ int xenia_main(const std::vector<std::wstring>& args) {
     }
   }
   content_root = xe::to_absolute_path(content_root);
+  XELOGI("Content root: %S", content_root.c_str());
 
   // Create the emulator but don't initialize so we can setup the window.
   auto emulator = std::make_unique<Emulator>(L"", content_root);