ARM: add USB device support to pcm037

Add OTG device definition and resources to i.MX31 and a pure USB device mode
support to the pcm037 board.

Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/mach-mx3/devices.h b/arch/arm/mach-mx3/devices.h
index 88c04b2..27779c3 100644
--- a/arch/arm/mach-mx3/devices.h
+++ b/arch/arm/mach-mx3/devices.h
@@ -14,3 +14,4 @@
 extern struct platform_device mxc_fec_device;
 extern struct platform_device mxcsdhc_device0;
 extern struct platform_device mxcsdhc_device1;
+extern struct platform_device mxc_otg_udc_device;