[PATCH v3 0/7] rust: use vertical import style and remove redundant imports

[Alvin Sun <alvin.sun@linux.dev>]

Adopt the vertical import style and drop redundant imports already
re-exported via `kernel::prelude`.

Changes include:
- Convert use statements to vertical import style in miscdevice,
  samples, doctest, and block/mq
- Remove imports covered by prelude and apply minor formatting

Signed-off-by: Alvin Sun <alvin.sun@linux.dev>
---
Changes in v3:
- Add trailing // to last items and closing braces in block/mq imports
- Add rnull vertical import style
- Add doctest vertical import style
- Link to v2: https://lore.kernel.org/r/20260520-miscdev-use-format-v2-0-64dc48fc1345@linux.dev

Changes in v2:
- Reformat use statements and drop redundant imports in
  rust/kernel/block/mq
- Drop redundant imports in rust/kernel/miscdevice
- Link to v1: https://lore.kernel.org/r/20260519-miscdev-use-format-v1-0-11d526ba0edc@linux.dev

---
Alvin Sun (7):
      rust: miscdevice: use vertical import style
      samples: rust_misc_device: use vertical import style
      rust: miscdevice: remove redundant imports
      rust: block: mq: use vertical import style
      rust: block: mq: remove redundant imports and format
      rust: block: rnull: use vertical import style
      rust: doctest: use vertical import style

 drivers/block/rnull/configfs.rs    | 27 +++++++++++++++++++++------
 drivers/block/rnull/rnull.rs       | 15 +++++++++++----
 rust/kernel/block/mq/gen_disk.rs   | 24 ++++++++++++++++++------
 rust/kernel/block/mq/operations.rs | 14 ++++++++++----
 rust/kernel/block/mq/request.rs    | 16 +++++++++++-----
 rust/kernel/block/mq/tag_set.rs    | 28 ++++++++++++++--------------
 rust/kernel/miscdevice.rs          | 23 +++++++++++++++++------
 samples/rust/rust_misc_device.rs   | 34 ++++++++++++++++++++++++++++------
 scripts/rustdoc_test_gen.rs        | 11 +++++++++--
 9 files changed, 139 insertions(+), 53 deletions(-)
---
base-commit: 5200f5f493f79f14bbdc349e402a40dfb32f23c8
change-id: 20260519-miscdev-use-format-9ab7e83b1c11

Best regards,
-- 
Alvin Sun <alvin.sun@linux.dev>