GB: Add missing override for Mario & Yoshi
GB: Add missing override for Mario & Yoshi

mgba-emu/mgba,mgba-emu/mgba,libretro/mgba,libretro/mgba,libretro/mgba,Iniquitatis/mgba,libretro/mgba,libretro/mgba,Iniquitatis/mgba,Iniquitatis/mgba,mgba-emu/mgba,Iniquitatis/mgba,mgba-emu/mgba