iommu/arm-smmu: Add global/context fault implementation hooks
Add global/context fault hooks to allow vendor specific implementations override default fault interrupt handlers. Update NVIDIA implementation to override the default global/context fault interrupt handlers and handle interrupts across the two ARM MMU-500s that are programmed identically. Signed-off-by: NKrishna Reddy <vdumpa@nvidia.com> Reviewed-by: NJon Hunter <jonathanh@nvidia.com> Reviewed-by: NNicolin Chen <nicoleotsuka@gmail.com> Reviewed-by: NPritesh Raithatha <praithatha@nvidia.com> Reviewed-by: NRobin Murphy <robin.murphy@arm.com> Reviewed-by: NThierry Reding <thierry.reding@gmail.com> Link: https://lore.kernel.org/r/20200718193457.30046-6-vdumpa@nvidia.comSigned-off-by: NWill Deacon <will@kernel.org>
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