iommu/arm-smmu: Merge all IOMMU changes from msm-4.19 to msm-lahaina

This patch merges all of the IOMMU/SMMU, DMA mapping, fast, and
lazy mapping changes from msm-4.19 into msm-lahaina.

Change-Id: If7c1f641a8c836dbb799e2f3439f443ff299b299
Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org>