Later patches align VRAM addresses down to the PRAMIN window. Implement `Alignable` trait for `VramAddress` and plus add a `ZERO` constant. Also print the address in hex under `{:?}`, so it reads well in debug output. Signed-off-by: Eliot Courtney <ecourtney@nvidia.com> Acked-by: Danilo Krummrich <dakr@kernel.org> Link: https://patch.msgid.link/20260827-pramin-split-v3-2-24b24d7afc52@nvidia.com Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>