PCI: qcom: Add support for IPQ5018

PCI: qcom: Add support for IPQ5018

Add IPQ5018 platform with is based on Qcom IP rev. 2.9.0 and Synopsys IP
rev. 5.00a.

The platform itself has two PCIe Gen2 controllers: one single-lane and
one dual-lane. So add the IPQ5018 compatible and re-use 2_9_0 ops.

Signed-off-by: Nitheesh Sekar <quic_nsekar@quicinc.com>
Signed-off-by: Sricharan R <quic_srichara@quicinc.com>
Signed-off-by: George Moussalem <george.moussalem@outlook.com>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://patch.msgid.link/20250326-ipq5018-pcie-v7-4-e1828fef06c9@outlook.com