Fix GDB stub reporting of CPSR
Fix GDB stub reporting of CPSR

Anty-Lemon/mgba,libretro/mgba,fr500/mgba,Iniquitatis/mgba,Anty-Lemon/mgba,fr500/mgba,mgba-emu/mgba,mgba-emu/mgba,jeremyherbert/mgba,Iniquitatis/mgba,libretro/mgba,jeremyherbert/mgba,mgba-emu/mgba,libretro/mgba,libretro/mgba,libretro/mgba,mgba-emu/mgba,fr500/mgba,jeremyherbert/mgba,Iniquitatis/mgba,fr500/mgba,jeremyherbert/mgba,Anty-Lemon/mgba,Anty-Lemon/mgba,Iniquitatis/mgba