SDL: Fix Raspberry Pi build
SDL: Fix Raspberry Pi build

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