[OpenTK] Suggest alternative to obsolete INativeWindow.InputDriver property

Source/OpenTK/INativeWindow.cs

@@ -129,7 +129,7 @@ namespace OpenTK
         /// <summary>
         /// This property is deprecated and should not be used.
         /// </summary>
-        [Obsolete]
+        [Obsolete("Use OpenTK.Input.Mouse/Keybord/Joystick/GamePad instead.")]
         OpenTK.Input.IInputDriver InputDriver { get; }
 
         /// <summary>