iommu/arm-smmu: Move Arm SMMU drivers into their own subdirectory

The Arm SMMU drivers are getting fat on vendor value-add, so move them
to their own subdirectory out of the way of the other IOMMU drivers.
Suggested-by: Joerg Roedel <joro@8bytes.org>
Signed-off-by: Will Deacon <will@kernel.org>

MAINTAINERS

@@ -1498,7 +1498,7 @@ R:	Robin Murphy <robin.murphy@arm.com>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 F:	Documentation/devicetree/bindings/iommu/arm,smmu*
-F:	drivers/iommu/arm-smmu*
+F:	drivers/iommu/arm/
 F:	drivers/iommu/io-pgtable-arm-v7s.c
 F:	drivers/iommu/io-pgtable-arm.c
 
@@ -16813,7 +16813,7 @@ M:	Thierry Reding <thierry.reding@gmail.com>
 R:	Krishna Reddy <vdumpa@nvidia.com>
 L:	linux-tegra@vger.kernel.org
 S:	Supported
-F:	drivers/iommu/arm-smmu-nvidia.c
+F:	drivers/iommu/arm/arm-smmu/arm-smmu-nvidia.c
 F:	drivers/iommu/tegra*
 
 TEGRA KBC DRIVER

drivers/iommu/Makefile

 # SPDX-License-Identifier: GPL-2.0
+obj-y += arm/
 obj-$(CONFIG_IOMMU_API) += iommu.o
 obj-$(CONFIG_IOMMU_API) += iommu-traces.o
 obj-$(CONFIG_IOMMU_API) += iommu-sysfs.o
@@ -14,9 +15,6 @@ obj-$(CONFIG_MSM_IOMMU) += msm_iommu.o
 obj-$(CONFIG_AMD_IOMMU) += amd/iommu.o amd/init.o amd/quirks.o
 obj-$(CONFIG_AMD_IOMMU_DEBUGFS) += amd/debugfs.o
 obj-$(CONFIG_AMD_IOMMU_V2) += amd/iommu_v2.o
-obj-$(CONFIG_ARM_SMMU) += arm_smmu.o
-arm_smmu-objs += arm-smmu.o arm-smmu-impl.o arm-smmu-nvidia.o arm-smmu-qcom.o
-obj-$(CONFIG_ARM_SMMU_V3) += arm-smmu-v3.o
 obj-$(CONFIG_DMAR_TABLE) += intel/dmar.o
 obj-$(CONFIG_INTEL_IOMMU) += intel/iommu.o intel/pasid.o
 obj-$(CONFIG_INTEL_IOMMU) += intel/trace.o
@@ -35,6 +33,5 @@ obj-$(CONFIG_TEGRA_IOMMU_SMMU) += tegra-smmu.o
 obj-$(CONFIG_EXYNOS_IOMMU) += exynos-iommu.o
 obj-$(CONFIG_FSL_PAMU) += fsl_pamu.o fsl_pamu_domain.o
 obj-$(CONFIG_S390_IOMMU) += s390-iommu.o
-obj-$(CONFIG_QCOM_IOMMU) += qcom_iommu.o
 obj-$(CONFIG_HYPERV_IOMMU) += hyperv-iommu.o
 obj-$(CONFIG_VIRTIO_IOMMU) += virtio-iommu.o

drivers/iommu/arm/Makefile

+# SPDX-License-Identifier: GPL-2.0
+obj-y += arm-smmu/ arm-smmu-v3/

drivers/iommu/arm/arm-smmu-v3/Makefile

+# SPDX-License-Identifier: GPL-2.0
+obj-$(CONFIG_ARM_SMMU_V3) += arm-smmu-v3.o

drivers/iommu/arm/arm-smmu/Makefile

+# SPDX-License-Identifier: GPL-2.0
+obj-$(CONFIG_QCOM_IOMMU) += qcom_iommu.o
+obj-$(CONFIG_ARM_SMMU) += arm_smmu.o
+arm_smmu-objs += arm-smmu.o arm-smmu-impl.o arm-smmu-nvidia.o arm-smmu-qcom.o