iommu: Add device_group call-back to x86 iommu drivers

Set the device_group call-back to pci_device_group() for the
Intel VT-d and the AMD IOMMU driver.
Signed-off-by: NJoerg Roedel <jroedel@suse.de>

drivers/iommu/amd_iommu.c

@@ -3189,6 +3189,7 @@ static const struct iommu_ops amd_iommu_ops = {
 	.iova_to_phys = amd_iommu_iova_to_phys,
 	.add_device = amd_iommu_add_device,
 	.remove_device = amd_iommu_remove_device,
+	.device_group = pci_device_group,
 	.get_dm_regions = amd_iommu_get_dm_regions,
 	.put_dm_regions = amd_iommu_put_dm_regions,
 	.pgsize_bitmap	= AMD_IOMMU_PGSIZES,

drivers/iommu/intel-iommu.c

@@ -4872,6 +4872,7 @@ static const struct iommu_ops intel_iommu_ops = {
 	.iova_to_phys	= intel_iommu_iova_to_phys,
 	.add_device	= intel_iommu_add_device,
 	.remove_device	= intel_iommu_remove_device,
+	.device_group   = pci_device_group,
 	.pgsize_bitmap	= INTEL_IOMMU_PGSIZES,
 };