IOMMU Updates for Linux v3.18 This pull-request includes: * Change in the IOMMU-API to convert the former iommu_domain_capable function to just iommu_capable * Various fixes in handling RMRR ranges for the VT-d driver (one fix requires a device driver core change which was acked by Greg KH) * The AMD IOMMU driver now assigns and deassigns complete alias groups to fix issues with devices using the wrong PCI request-id * MMU-401 support for the ARM SMMU driver * Multi-master IOMMU group support for the ARM SMMU driver * Various other small fixes all over the place