dt-bindings: usb: genesys,gl850g: use usb-hub.yaml

In order to reduce duplication, switch GL850G to use USB hub bindings
instead of using simple usb-device.yaml

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: "Rob Herring (Arm)" <robh@kernel.org>
Link: https://lore.kernel.org/r/20250608-genesys-ports-v1-1-09ca19f6838e@oss.qualcomm.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>