NRF_USBD->SIZE.EPOUT[epnum] only need to write once to enable Bulk/Interrupt transfer. We only need to do it in dcd_edpt_open() and dcd_edpt_clear_stall()
NRF_USBD->SIZE.EPOUT[epnum] only need to write once to enable Bulk/Interrupt transfer. We only need to do it in dcd_edpt_open() and dcd_edpt_clear_stall()