Merge ranch 'topic-0620/samsung-dmamapping-3.4' into chromeos-exynos-3.4

* topic-0620/samsung-dmamapping-3.4:
  iommu/exynos: add support for IOMMU mapping for virtual devices
  IOMMU: EXYNOS: Adding DT support to sysmmu driver for exynos
  iommu/exynos: fix runtime pm support
  iommu/exynos: Add iommu driver for Exynos Platforms
  scatterlist: add sg_alloc_table_from_pages function
  ARM: dma-mapping: fix debug messages in dmabounce code
  ARM: dma-mapping: add support for DMA_ATTR_SKIP_CPU_SYNC attribute
  common: DMA-mapping: add DMA_ATTR_SKIP_CPU_SYNC attribute
  ARM: dma-mapping: add support for dma_get_sgtable()
  common: dma-mapping: introduce dma_get_sgtable() function
  ARM: dma-mapping: add support for DMA_ATTR_NO_KERNEL_MAPPING attribute
  common: DMA-mapping: add DMA_ATTR_NO_KERNEL_MAPPING attribute
  ARM: dma-mapping: remove custom consistent dma region
  mm: vmalloc: add VM_DMA flag to indicate areas used by dma-mapping framework
  mm: vmalloc: use const void * for caller argument