arm64: dts: qcom: rb5: Enable PCIe ports and PHY

RB5 has 3 PCIe ports exposed to connect PCIe client devices. PCIe0 is
connected to QCA6391 chipset and others are available on the HS3
expansion connector. Hence, enable all of them.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20210127234221.947306-3-dmitry.baryshkov@linaro.org


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