arm64: dts: meson-g12a-u200: Enable USB

Enable the USB2 OTG and USB3 Host ports on the S905D2 Reference Design.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>