GBA Video: Don't mask out high bits of BLDY (fixes #899)
GBA Video: Don't mask out high bits of BLDY (fixes #899)

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