Revert "iommu/amd: Prevent binding other PCI drivers to IOMMU PCI devices"

Commit 991de2e5 ("PCI, x86: Implement pcibios_alloc_irq() and
pcibios_free_irq()") changed IRQ handling on PCI driver probing.
It inadvertently broke resume from system sleep on AMD platforms:

  https://lore.kernel.org/r/20150926164651.GA3640@pd.tnic/



This was fixed by two independent commits:

* 8affb487 ("x86/PCI: Don't alloc pcibios-irq when MSI is enabled")
* cbbc00be ("iommu/amd: Prevent binding other PCI drivers to IOMMU PCI devices")

The breaking change and one of these two fixes were subsequently reverted:

* fe25d078 ("Revert "x86/PCI: Don't alloc pcibios-irq when MSI is enabled"")
* 6c777e87 ("Revert "PCI, x86: Implement pcibios_alloc_irq() and pcibios_free_irq()"")

This rendered the second fix unnecessary, so revert it as well.  It used
the match_driver flag in struct pci_dev, which is internal to the PCI core
and not supposed to be touched by arbitrary drivers.

Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Acked-by: Joerg Roedel <jroedel@suse.de>
Link: https://patch.msgid.link/9a3ddff5cc49512044f963ba0904347bd404094d.1745572340.git.lukas@wunner.de