iommu/amd: Select IOMMU_IOVA for AMD IOMMU

Include the generic IOVA code to make use of it in the AMD
IOMMU driver too.
Signed-off-by: NJoerg Roedel <jroedel@suse.de>

drivers/iommu/Kconfig

@@ -111,6 +111,7 @@ config AMD_IOMMU
 	select PCI_PRI
 	select PCI_PASID
 	select IOMMU_API
+	select IOMMU_IOVA
 	depends on X86_64 && PCI && ACPI
 	---help---
 	  With this option you can enable support for AMD IOMMU hardware in