PiGRRL 2 Labeled Action Buttons

This is a modification of the PiGRRL 2 action button pad. It adds the X Y A B labels to the top of the buttons. There are other similar remixes but I found that their orientation seemed to be 90° off. The part only fits into the housing in one orientation, otherwise the buttons rub on the housing. With this remix, the label letters will be upright when the part is inserted so that the buttons don't rub.