[PATCH] iommu: amd_iommu_init: constify amd_iommu_group.

File size before: textdata bss dec hex filename 143231840 353 165164084 drivers/iommu/amd_iommu_init.o File size After adding 'const': textdata bss dec hex filename 143791776 353 16508407c drivers/iommu/amd_iommu_init.o

[PATCH] iommu: amd_iommu_init: constify amd_iommu_group.

File size before: textdata bss dec hex filename 143231840 353 165164084 drivers/iommu/amd_iommu_init.o File size After adding 'const': textdata bss dec hex filename 143791776 353 16508407c drivers/iommu/amd_iommu_init.o