iommu: add new iommu_ops callback for adding an OF device
This patch adds a new function to the iommu_ops structure to allow an OF device to be added to a specific IOMMU instance using the recently merged generic devicetree binding for IOMMUs. The callback (of_xlate) takes a struct device representing the master and an of_phandle_args representing the IOMMU and the correspondong IDs for the new master. Acked-by: NArnd Bergmann <arnd@arndb.de> Acked-by: NJoerg Roedel <jroedel@suse.de> Acked-by: NMarek Szyprowski <m.szyprowski@samsung.com> Tested-by: NRobin Murphy <robin.murphy@arm.com> Signed-off-by: NWill Deacon <will.deacon@arm.com>
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