arm64: dts: qcom: x1e80100: add PCIe5 nodes

Describe the fifth PCIe controller and its PHY.

Note that using the GIC ITS with PCIe5 does not work currently so the
ITS mapping is left unspecified for now.

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20240722094249.26471-8-johan+linaro@kernel.org


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