Perf: Support alternate cores
Perf: Support alternate cores

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