ARM: dts: imx6qdl-hummingboard: fix USBOTG-ID pin

Fix the USBOTG-ID pin to the correct definition.  The top
USB port stays in device-mode without this change.

Signed-off-by: Jon Nettleton <jon@solid-run.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>