arm64: dts: qcom: sm8550-qrd: add bluetooth support

Enable the WCN7850 bluetooth over the UART14 link.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230911-topic-sm8550-upstream-bt-v4-2-a5a428c77418@linaro.org


Signed-off-by: Bjorn Andersson <andersson@kernel.org>