dt-bindings: gpio: realtek-otto: add rtl9607 compatible

Add the "realtek,rtl9607-gpio" compatible for GPIO nodes
on the RTL9607C SoC series.

Signed-off-by: Rustam Adilov <adilov@disroot.org>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Reviewed-by: Sander Vanheule <sander@svanheule.net>
Link: https://patch.msgid.link/20260305161106.15999-2-adilov@disroot.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>

Author: Rustam Adilov

Documentation/devicetree/bindings/gpio/realtek,otto-gpio.yaml

@@ -30,6 +30,7 @@ properties:
           - realtek,rtl8390-gpio
           - realtek,rtl9300-gpio
           - realtek,rtl9310-gpio
+          - realtek,rtl9607-gpio
       - const: realtek,otto-gpio
 
   reg: true