dt-bindings: pinctrl: qcom,sm8350: add input-disable

The SM8350 HDK8350 board uses input-disable property, so allow it:

  sm8350-hdk.dtb: pinctrl@f100000: lt9611-state: 'oneOf' conditional failed, one must be fixed:
    ...
    'input-disable' does not match any of the regexes: 'pinctrl-[0-9]+'

Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230201154321.276419-3-krzysztof.kozlowski@linaro.org


Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>