arm64: dts: qcom: sdm845-xiaomi-beryllium: fix audio codec interrupt pin name

The pin config entry should have a string, not number, for the GPIO used
as WCD9340 audio codec interrupt.

Fixes: dd6459a0 ("arm64: dts: qcom: split beryllium dts into common dtsi and tianma dts")
Reported-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221222151319.122398-2-krzysztof.kozlowski@linaro.org