arm64: dts: qcom: x1e80100-yoga: add wifi calibration variant

Describe the bus topology for PCIe domain 4 and add the ath12k
calibration variant so that the board file (calibration data) can be
loaded.

Signed-off-by: Patrick Wildt <patrick@blueri.se>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/ZpV7OeGNIGGpqNC0@windev.fritz.box


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