[PATCH] PCI: Remove unnecessary of_irq.h includes

[Bjorn Helgaas]

[+cc Pali, heads-up for trivial addition of <linux/irqdomain.h> to
pci-mvebu.c]

On Thu, Oct 20, 2022 at 08:20:25AM +0100, Conor Dooley wrote:
> On Thu, Oct 20, 2022 at 03:08:50PM +0800, kernel test robot wrote:
> > Hi Bjorn,
> > 
> > I love your patch! Yet something to improve:
> > 
> > >> drivers/pci/controller/pcie-microchip-host.c:473:31: error: incomplete definition of type 'struct irq_domain'
> >            struct mc_pcie *port = domain->host_data;
> 
> That's what I get for only visually inspecting the patch before Acking
> it.. Un-ack I suppose.

No problem!

I think what happened is the pcie-microchip-host.c uses
irq_domain_add_linear() so it needs <linux/irqdomain.h>, but it
currently gets it via <linux/of_irq.h>, which it doesn't otherwise
need.

I added a preparatory patch to include <linux/irqdomain.h> explicitly,
but I haven't been able to cross-build either riscv or ia64 to verify
this fix.  I'll wait a few days and post an updated series for the
0-day bot to test.

Same situation for pcie-altera-msi.c.

pci-mvebu.c also relies on getting <linux/irqdomain.h> via
<linux/of_irq.h>, but it actually depends on of_irq.h, so I'll just
add an irqdomain.h include there.

Bjorn