- Add blob registry (blobs: BTreeMap<u32, Vec<u8>>) to DrmScheme with
create_blob()/blob_data() methods for property blob storage.
- Fix GETPROPBLOB to return actual blob data instead of echoing back
the request payload. Unknown blob IDs return zero-length blobs.
- Add MODE_ATOMIC ioctl stub: test-only commits return success,
nonblock/page-flip commits delegate to legacy path.
- Add CRTC_PROP_GAMMA_LUT_SIZE (immutable range, min=0 max=256)
and CRTC_PROP_GAMMA_LUT (atomic blob) properties.
- Update crtc_count in GETRESOURCES from 1 to 4 (matches AmdDriver).
- Rename synthetic EDID monitor name from 'Synthetic DP' to
'RedBearSynthDP' for honest origin identification.
vasilito
ff8a0e35ca