arm64: dts: qcom: sc8180x: Mark PCIe hosts cache-coherent

The PCIe controllers on 8180 are cache-coherent. Mark them as such.

Fixes: d20b6c84

 ("arm64: dts: qcom: sc8180x: Add PCIe instances")
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20231219-topic-8180_pcie_dmac-v1-1-5d00fc1b23fd@linaro.org


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