ARM: dts: imx6ul-14x14-evk.dtsi: configure USBOTG1 ID pinctrl

Without configuring this pinctrl, the ID value can't be got correctly,
then, the dual-role switch can't work well.

Signed-off-by: Peter Chen <peter.chen@nxp.com>
Reviewed-by: Jun Li <jun.li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>