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pci_dw.c: Set IO ATU window correctly
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Authored by kd on Mar 31 2021, 4:19 PM.

Details

Summary

Use viewport "2" instead of "0" and change window type from MEM to IO.
Without these changes the MEM ATU window is overwritten with the IO one.
On macchiatobin memory window is mapped 1:1, i.e no address translation is done which is why PCI works fine there.
This issue was discovered on a different board running a similar SoC to macchiatobin.

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rG FreeBSD src repository
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