dt-bindings: gpio: brcmstb: add gpio-ranges

Add optional gpio-ranges device-tree property to the Broadcom
Set-Top-Box GPIO controller.
Signed-off-by: Doug Berger <opendmb@gmail.com>
Acked-by: Florian Fainelli <florian.fainelli@broadcom.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240424185039.1707812-2-opendmb@gmail.comSigned-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Documentation/devicetree/bindings/gpio/brcm,brcmstb-gpio.yaml

@@ -62,6 +62,8 @@ properties:
 
   interrupt-controller: true
 
+  gpio-ranges: true
+
   wakeup-source:
     type: boolean
     description: >
@@ -88,6 +90,7 @@ examples:
         interrupt-parent = <&irq0_intc>;
         interrupts = <0x6>;
         brcm,gpio-bank-widths = <32 32 32 24>;
+        gpio-ranges = <&pinctrl 0 0 120>;
     };
 
     upg_gio_aon: gpio@f04172c0 {