GBA Memory: Fix prefetch values in Thumb mode
GBA Memory: Fix prefetch values in Thumb mode

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