Port of Linux patch https://patchwork.kernel.org/patch/10766235/

  The HW can swap the USB differential-pair (D+/D-) for each port
  separately. So the USB signals can be re-aligned with a misplaced
  USB connector on the PCB.

  Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
  Reviewed-by: Richard Leitner <richard.leitner@skidata.com>

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>