6841893 Need to add quiesce method to amd_iommu in order for fast reboot to work.

6839215 amd_iommu driver panics dom0 in snv_114.

6882210 remove AMD IOMMU cruft

backout 6841893: breaks sparc build backout 6839215: breaks sparc build backout 6880217: breaks sparc build

6841893 Need to add quiesce method to amd_iommu in order for fast reboot to work.

6839215 amd_iommu driver panics dom0 in snv_114.