Use phandles instead of unit adresses to reference usb and dma nodes.
This makes the DT more robust and readable.
Signed-off-by: NGuido Martínez <guido@vanguardiasur.com.ar>
Acked-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>