ARM: dts: omap3-igep0030-common: Add USB Host support

Provide RESET GPIO for the USB PHY, the USB Host port mode and
the PHY device for the controller. Also provides pin multiplexer
information for USB host pins.

Signed-off-by: Pau Pajuel <ppajuel@gmail.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>