fix controllersConfig not being defined in dolphin generator

Author: bryanforbes

package/batocera/core/batocera-configgen/configgen/configgen/generators/dolphin/dolphinGenerator.py

@@ -5,7 +5,7 @@
 from pathlib import Path
 from typing import TYPE_CHECKING
 
-from ... import Command
+from ... import Command, controllersConfig
 from ...batoceraPaths import CACHE, CONFIGS, SAVES, mkdir_if_not_exists
 from ...utils import vulkan
 from ...utils.configparser import CaseSensitiveConfigParser