arm64: dts: qcom: x1e80100: Add support for PCIe3 on x1e80100

arm64: dts: qcom: x1e80100: Add support for PCIe3 on x1e80100

Describe PCIe3 controller and PHY. Also add required system resources like
regulators, clocks, interrupts and registers configuration for PCIe3.

Signed-off-by: Qiang Yu <quic_qianyu@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20241105073615.3076979-1-quic_qianyu@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>