esp32: Expose GPy LTE UART pins.
esp32: Expose GPy LTE UART pins.

Xykon/pycom-micropython-sigfox,husigeza/pycom-micropython-sigfox,Xykon/pycom-micropython-sigfox,husigeza/pycom-micropython-sigfox,husigeza/pycom-micropython-sigfox,Xykon/pycom-micropython-sigfox,Xykon/pycom-micropython-sigfox,husigeza/pycom-micropython-sigfox,Xykon/pycom-micropython-sigfox,husigeza/pycom-micropython-sigfox