Wii: Clean up control lookup code in preparation of control remapping
Wii: Clean up control lookup code in preparation of control remapping

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