iommufd_ioctls: Use *mut cast for IOMMU_IOAS_UNMAP#2

likebreath merged 1 commit intocloud-hypervisor:maincloud-hypervisor/iommufd:mainfrom

likebreath:1229/fix_iommu_ioas_unmaplikebreath/iommufd:1229/fix_iommu_ioas_unmapCopy head branch name to clipboard