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iommu/arm-smmu: Add Hibernation support
This adds support for saving the arm-smmu client's context
just before going into hibernation. This context is restored
on the subesequent hibernate restore.
Also, invalidate the TLB during the restore phase to avoid
wrong translations post-resume.
Change-Id: Idd8d12bb4d13f8a62bd51e0adaad82bd92f658ee
Signed-off-by: vkakani <vkakani@codeaurora.org>
Signed-off-by: Arun KS <arunks@codeaurora.org>
Signed-off-by: Atul Raut <araut@codeaurora.org>
Signed-off-by: Siddhartha Agrawal <agrawals@codeaurora.org>