iommufd: Add three missing structures in ucmd_buffer

struct iommu_ioas_copy, struct iommu_option and struct iommu_vfio_ioas are
missed in ucmd_buffer. Although they are smaller than the size of
ucmd_buffer, it is safer to list them in ucmd_buffer explicitly.

Fixes: aad37e71 ("iommufd: IOCTLs for the io_pagetable")
Fixes: d624d665 ("iommufd: vfio container FD ioctl compatibility")
Link: https://lore.kernel.org/r/20230120122040.280219-1-yi.l.liu@intel.comSigned-off-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/iommu/iommufd/main.c

@@ -252,9 +252,12 @@ union ucmd_buffer {
 	struct iommu_destroy destroy;
 	struct iommu_ioas_alloc alloc;
 	struct iommu_ioas_allow_iovas allow_iovas;
+	struct iommu_ioas_copy ioas_copy;
 	struct iommu_ioas_iova_ranges iova_ranges;
 	struct iommu_ioas_map map;
 	struct iommu_ioas_unmap unmap;
+	struct iommu_option option;
+	struct iommu_vfio_ioas vfio_ioas;
 #ifdef CONFIG_IOMMUFD_TEST
 	struct iommu_test_cmd test;
 #endif