Fix usb0 pin 19 -> 29 (matching ethernet1 pins and manual).
Pin 19 is used for ethernet0 on the Parallella board.

Fixes: add958ce ("pinctrl: Add driver for Zynq")
Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>