GB: Add override for Pokemon Gold demo (fixes #1097)
GB: Add override for Pokemon Gold demo (fixes #1097)

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