On the imx23-olinuxino board GPIO2_1 is connected to the LED and GPIO0_17
is the USB PHY reset.

So make the IOMUX assignment properly.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>