Re: [v4] PCI: cadence-ep: Fix the driver to send MSG TLP for INTx without data payload

[Krzysztof Wilczyński]

Hello,

> Cadence reference manual cdn_pcie_gen4_hpa_axi_ips_ug_v1.04.pdf, section
> 9.1.7.1 'AXI Subordinate to PCIe Address Translation' mentions that
> axi_s_awaddr bits 16 when set, corresponds to MSG with data and when not
> set, MSG without data.
> 
> But the driver is doing the opposite and due to this, INTx is never
> received on the host. So fix the driver to reflect the documentation and
> also make INTx work.

Applied to controller/cadence, thank you!

	Krzysztof