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1ac8044294
Some PCI device devicetree is like:
```dts
pcie@fe270000 {
device_type = "pci";
msi-map = <0x1000 0x9c 0x1000 0x1000>;
pcie@10 {
reg = <0x100000 0x00 0x00 0x00 0x00>;
#address-cells = <0x03>;
#size-cells = <0x02>;
pcie@10,0 {
reg = <0x00 0x00 0x00 0x00 0x00>;
};
};
};
```
that the pcie@10,0 have a private ofw node, it will find
property name `msi-map` or `msi-parent` fail.
We should only find the property in host bridge's ofw node.
Signed-off-by: GuEe-GUI <2991707448@qq.com>