dt-bindings: pinctrl: qcom,ipq6018: Fix example 'gpio-ranges' size

'gpio-ranges' entries have a fixed size of 1 phandle plus arg 3 cells.
The qcom,ipq6018-pinctrl example is a cell short:

Documentation/devicetree/bindings/pinctrl/qcom,ipq6018-pinctrl.example.dtb: pinctrl@1000000: gpio-ranges:0: [1, 0, 80] is too short
	From schema: /usr/local/lib/python3.10/dist-packages/dtschema/schemas/gpio/gpio.yaml

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220809214556.2489822-1-robh@kernel.org