Optimize input setup. Update es_system.cfg
Delete unnecessary files
gpsp: fix RPI revision check
Update autoconfigs
Set digital dpad mode 1 (left) as default
Disable digital dpad mode 1 (left) as default
Delete logs
Remove duplicate audio_rate setting

em_configureSoundsettings() already sets 48000.
Merge pull request #292 from gizmo98/master

Minor improvements.