Allwinner H3/H5 have a dual-routed USB PHY0 -- routed to either OHCI/EHCI
or MUSB controller.

Add device nodes for these controllers.
Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>