From looking at the board, it looks like it's mostly copied from the iMX6 reference design and Hobbitboard. The iMX supports an OTG port in it's stage 0 ROM fo

From looking at the board, it looks like it's mostly copied from the iMX6 reference design and Hobbitboard. The iMX supports an OTG port in it's stage 0 ROM for device recovery, and it can be lit up as a USB gadget. It's just a question if it's padded out on the PCB. Seems like there's a number of pogo pin pads near the edge of the board and it's probably in there somewhere.