Initialise buttons so we don't get stuck keys.
Initialise buttons so we don't get stuck keys.

hrydgard/native,hrydgard/native,Ced2911/native,Ced2911/native,zhykzhykzhyk/ppsspp-native,unknownbrackets/native,libretro/ppsspp-native,unknownbrackets/native,unknownbrackets/native,hrydgard/native,zhykzhykzhyk/ppsspp-native,hrydgard/native,unknownbrackets/native,libretro/ppsspp-native,libretro/ppsspp-native,zhykzhykzhyk/ppsspp-native,Ced2911/native,zhykzhykzhyk/ppsspp-native,libretro/ppsspp-native