arm64: dts: allwinner: h6: Enable USB 3.0 host for Beelink GS1 and Tanix TX6

Enable USB 3.0 phy and host controller.

VBUS is directly connected to DCIN 5V and doesn't
require to be switched on.

Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>