PSP2: More threading improvements
PSP2: More threading improvements

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