iommu/tegra241-cmdqv: import IOMMUFD module namespace

The tegra variant of smmu-v3 now uses the iommufd mmap interface but
is missing the corresponding import:

ERROR: modpost: module arm_smmu_v3 uses symbol _iommufd_object_depend from namespace IOMMUFD, but does not import it.
ERROR: modpost: module arm_smmu_v3 uses symbol iommufd_viommu_report_event from namespace IOMMUFD, but does not import it.
ERROR: modpost: module arm_smmu_v3 uses symbol _iommufd_destroy_mmap from namespace IOMMUFD, but does not import it.
ERROR: modpost: module arm_smmu_v3 uses symbol _iommufd_object_undepend from namespace IOMMUFD, but does not import it.
ERROR: modpost: module arm_smmu_v3 uses symbol _iommufd_alloc_mmap from namespace IOMMUFD, but does not import it.

Fixes: b135de2 ("iommu/tegra241-cmdqv: Add user-space use support")
Link: https://patch.msgid.link/r/20250714205747.3475772-1-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

Author: arndb

drivers/iommu/arm/arm-smmu-v3/tegra241-cmdqv.c

@@ -1329,3 +1329,5 @@ tegra241_cmdqv_init_vintf_user(struct arm_vsmmu *vsmmu,
 	tegra241_cmdqv_deinit_vintf(cmdqv, vintf->idx);
 	return ret;
 }
+
+MODULE_IMPORT_NS("IOMMUFD");