arm64: dts: qcom: sc8180x: Correct PCIe slave ports

arm64: dts: qcom: sc8180x: Correct PCIe slave ports

The interconnects property was clearly copy-pasted between the 4 PCIe
controllers, giving all four the cpu-pcie path destination of SLAVE_0.

The four ports are all associated with CN0, but update the property for
correctness sake.

Fixes: d20b6c84f56a ("arm64: dts: qcom: sc8180x: Add PCIe instances")
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20240525-sc8180x-pcie-interconnect-port-fix-v1-1-f86affa02392@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>