arm64: dts: qcom: sm8550: Add interconnect path to SCM node

Add the interconnect path to SCM dts node.

Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221115-topic-sm8550-upstream-dts-remoteproc-v3-1-815a1753de34@linaro.org