dt-bindings: usb: Add binding for Genesys Logic GL3523 hub

Add the binding for the USB3.1 Genesys Logic GL3523 hub.
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230623142228.4069084-1-m.felsch@pengutronix.deSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/devicetree/bindings/usb/genesys,gl850g.yaml

@@ -17,6 +17,7 @@ properties:
     enum:
       - usb5e3,608
       - usb5e3,610
+      - usb5e3,620
 
   reg: true