ipq806x: dts: rework PCIe nodes for Chromium OnHub

ipq806x: dts: rework PCIe nodes for Chromium OnHub

- Reuse the bridges node defined on "qcom-ipq8064.dtsi".
- Rename PCIe device nodes to unified "wifi@0,0".
- Add the missing "qcom,ath10k" compatibles.
- Remove unseless property "interrupt-controller". There are no
  consumers use these PCIe devices as interrupt controllers.
- Change bus number from 0 to 1, just like other ipq806x devices.
  The valid PCIe bus range on this platform is 1 - 255.

Signed-off-by: Shiji Yang <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/18989
Signed-off-by: Christian Marangi <[email protected]>