arm64: dts: qcom: sc8180x: Fix up PCIe nodes

Duplicated clock output names cause probe errors and wrong clocks cause
hardware not to work. Fix such issues.

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-v1-1-c2acbba4723c@linaro.org


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