PCI: Embed ATS info directly into struct pci_dev

The pci_ats struct is small and will get smaller, so I don't think it's
worth allocating it separately from the pci_dev struct.

Embed the ATS fields directly into struct pci_dev.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Joerg Roedel <jroedel@suse.de>

diff --cc drivers/pci/ats.c
Simple merge

diff --cc drivers/pci/remove.c
Simple merge

diff --cc include/linux/pci-ats.h
Simple merge

diff --cc include/linux/pci.h
Simple merge