fix checkbox bug in touch control visibility screen

Doesn’t do much. Just stores which checkbox was clicked and calls that checkbox's Toggle() so that it gets toggled. 

This pull request depends on [this](https://github.com/hrydgard/native/pull/162) one in native,

this fixes [this issue](https://github.com/hrydgard/ppsspp/issues/4277)

Sorry for the badly named branch ;)