arm64: dts: rockchip: add USB3 host to rock-5b

arm64: dts: rockchip: add USB3 host to rock-5b

Enable USB3 host controller for the Radxa ROCK 5 Model B. This adds
USB3 for the upper USB3 port (the one further away from the PCB).

The lower USB3 and the USB-C ports use the RK3588 USB TypeC host
controller, which use a different PHY without upstream support.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20231106155934.80838-1-sebastian.reichel@collabora.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>