Libretro: Clean up config item style
Libretro: Clean up config item style

Touched/mgba,iracigt/mgba,Touched/mgba,MerryMage/mgba,AdmiralCurtiss/mgba,iracigt/mgba,sergiobenrocha2/mgba,Anty-Lemon/mgba,mgba-emu/mgba,Anty-Lemon/mgba,MerryMage/mgba,jeremyherbert/mgba,mgba-emu/mgba,Iniquitatis/mgba,libretro/mgba,iracigt/mgba,Touched/mgba,MerryMage/mgba,Iniquitatis/mgba,jeremyherbert/mgba,mgba-emu/mgba,Anty-Lemon/mgba,libretro/mgba,sergiobenrocha2/mgba,sergiobenrocha2/mgba,Iniquitatis/mgba,jeremyherbert/mgba,fr500/mgba,iracigt/mgba,AdmiralCurtiss/mgba,libretro/mgba,fr500/mgba,jeremyherbert/mgba,sergiobenrocha2/mgba,sergiobenrocha2/mgba,Anty-Lemon/mgba,Iniquitatis/mgba,AdmiralCurtiss/mgba,libretro/mgba,fr500/mgba,mgba-emu/mgba,fr500/mgba,libretro/mgba