ARM: dts: rockchip: Add usb otg for rk3288-vyasa

Add usb otg support for rk3288-vyasa, board support usb1 otg
power through otg_vbus_drv and naming conversion followed
as per schematic.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>