Config: Extract ConfigInfo into own header

Source/Core/Common/Config/ConfigInfo.h

@@ -0,0 +1,30 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <string>
+
+#include "Common/Config/Enums.h"
+
+namespace Config
+{
+struct ConfigLocation
+{
+  System system;
+  std::string section;
+  std::string key;
+
+  bool operator==(const ConfigLocation& other) const;
+  bool operator!=(const ConfigLocation& other) const;
+  bool operator<(const ConfigLocation& other) const;
+};
+
+template <typename T>
+struct ConfigInfo
+{
+  ConfigLocation location;
+  T default_value;
+};
+}