d257a1ba12
- Implement VirglWait in VirtioDriver: polls cs_seqno with vblank-based timeout, returns handle on completion or 0 on timeout. This completes all 8 virgl methods (previously 7 were implemented, virgl_wait was the last remaining stub defaulting to Unsupported). - Revert incomplete linux-kpi idr.rs refactoring (uncommitted Box::new changes had broken syntax)