AMD IOMMU: save pci segment from ACPI tables

This patch adds the pci_seg field to the amd_iommu structure and fills
it with the corresponding value from the ACPI table.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/asm-x86/amd_iommu_types.h b/include/asm-x86/amd_iommu_types.h
index 8b8cd0c..20814b8 100644
--- a/include/asm-x86/amd_iommu_types.h
+++ b/include/asm-x86/amd_iommu_types.h
@@ -232,6 +232,9 @@
 	/* capabilities of that IOMMU read from ACPI */
 	u32 cap;
 
+	/* pci domain of this IOMMU */
+	u16 pci_seg;
+
 	/* first device this IOMMU handles. read from PCI */
 	u16 first_device;
 	/* last device this IOMMU handles. read from PCI */