arm64: dts: qcom: msm8916-thwc-ufi001c: add function to pin config

Bindings require pin configuration nodes to have the function, even if
it is GPIO:

  msm8916-thwc-ufi001c.dtb: pinctrl@1000000: sim-ctrl-default-state: 'oneOf' conditional failed, one must be fixed:
    'esim-sel-pins', 'sim-en-pins', 'sim-sel-pins' do not match any of the regexes: 'pinctrl-[0-9]+'

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230324202244.744271-1-krzysztof.kozlowski@linaro.org