BACKPORT: FROMLIST: arm64: dts: qcom: qcs404: Add PCIe related nodes

The QCS404 has a PCIe2 PHY and a Qualcomm PCIe controller, add these to
the platform dtsi and enable them for the EVB with the perst gpio
and analog supplies defined.

am link: https://lore.kernel.org/patchwork/patch/1035794/



Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Khasim Syed Mohammed <khasim.mohammed@linaro.org>