Qt: Further CMakeLists fixes
Qt: Further CMakeLists fixes

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