Android control mapping

Hello there,

I apologize if this question has already been answered, but my question is how to map controls on the android edition of PPSSPP. I suppose I could just map my wanted controls on my PC, and then copy the controls.ini (Is that the file that contains the mapping?) to my android, but I'd rather not do that. An example of what I want to do Is make the right analog stick function as the dpad by assigning the values for the dpad to the right analog.

Thank you for your time.