AMD IOMMU: add device notifier callback
Impact: inform IOMMU about state change of a device in the driver core
Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>
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Impact: inform IOMMU about state change of a device in the driver core
Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>