[PATCH v2] samples: rust_dma: use vertical import style

[Guru Das Srinagesh <linux@gurudas.dev>]

Convert `use` imports to vertical layout for better readability and
maintainability.

Signed-off-by: Guru Das Srinagesh <linux@gurudas.dev>
---
Came across a recent commit bc58905eb07 ("samples: rust_misc_device: use
vertical import style") and found a few more locations that could
benefit from this cleanup. No functional changes.

Separating out patches per-subsystem as per the review feedback in [0].

Tested via:

	$ make LLVM=1 rustfmtcheck || echo "fail"
	$

[0]: https://lore.kernel.org/lkml/20260628-b4-rust-vertical-imports-v1-0-98bc71d4810b@gurudas.dev/
---
Changes in v2:
- Link Mauve: Relocated empty terminal comment from middle of imports to
  end of all imports
- Link to v1: https://patch.msgid.link/20260705-rfl-vert-imp-v1-1-2f07946a905f@gurudas.dev

To: Danilo Krummrich <dakr@kernel.org>
To: Abdiel Janulgue <abdiel.janulgue@gmail.com>
To: Daniel Almeida <daniel.almeida@collabora.com>
To: Robin Murphy <robin.murphy@arm.com>
To: Andreas Hindborg <a.hindborg@kernel.org>
To: Miguel Ojeda <ojeda@kernel.org>
To: Boqun Feng <boqun@kernel.org>
To: Gary Guo <gary@garyguo.net>
To: Björn Roy Baron <bjorn3_gh@protonmail.com>
To: Benno Lossin <lossin@kernel.org>
To: Alice Ryhl <aliceryhl@google.com>
To: Trevor Gross <tmgross@umich.edu>
To: Tamir Duberstein <tamird@kernel.org>
To: Alexandre Courbot <acourbot@nvidia.com>
To: Onur Özkan <work@onurozkan.dev>
To: Nathan Chancellor <nathan@kernel.org>
To: Nick Desaulniers <nick.desaulniers+lkml@gmail.com>
To: Bill Wendling <morbo@google.com>
To: Justin Stitt <justinstitt@google.com>
Cc: driver-core@lists.linux.dev
Cc: rust-for-linux@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: llvm@lists.linux.dev
---
 samples/rust/rust_dma.rs | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/samples/rust/rust_dma.rs b/samples/rust/rust_dma.rs
index 5046b4628d0e..fc958d496c3e 100644
--- a/samples/rust/rust_dma.rs
+++ b/samples/rust/rust_dma.rs
@@ -12,10 +12,14 @@
         Device,
         DmaMask, //
     },
-    page, pci,
+    page,
+    pci,
     prelude::*,
-    scatterlist::{Owned, SGTable},
-    sync::aref::ARef,
+    scatterlist::{
+        Owned,
+        SGTable, //
+    },
+    sync::aref::ARef, //
 };
 
 #[pin_data(PinnedDrop)]

---
base-commit: dc59e4fea9d83f03bad6bddf3fa2e52491777482
change-id: 20260705-rfl-vert-imp-d12bdbe397c7

Best regards,
--  
Guru Das Srinagesh <linux@gurudas.dev>