arm64: dts: allwinner: enable EHCI1, OHCI1 and USB PHY nodes in Pine64

Pine64 have two USB Type-A ports, which are wired to the two ports of
A64 USB PHY, and the lower port is the EHCI/OHCI1 port.

Enable the necessary nodes to enable the lower USB port to work.

Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>