[PATCH] pwm: th1520: use vertical import style

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

Signed-off-by: Guru Das Srinagesh <[email protected]>
---
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/[email protected]/
---
 drivers/pwm/pwm_th1520.rs | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/pwm/pwm_th1520.rs b/drivers/pwm/pwm_th1520.rs
index 3e3fa51ccef9..2a3b107157ac 100644
--- a/drivers/pwm/pwm_th1520.rs
+++ b/drivers/pwm/pwm_th1520.rs
@@ -23,15 +23,21 @@
 use core::ops::Deref;
 use kernel::{
     clk::Clk,
-    device::{Bound, Core, Device},
+    device::{
+        Bound,
+        Core,
+        Device, //
+    },
     devres,
     io::{
         mem::IoMem,
         Io, //
     },
-    of, platform,
+    of,
+    platform, //
     prelude::*,
-    pwm, time,
+    pwm,
+    time, //
 };
 
 const TH1520_MAX_PWM_NUM: u32 = 6;

---
base-commit: 1a4920940ebfd8d907858abd8f8dd09b13752946
change-id: 20260705-pwm-rust-vert-imp-59a3d18bd0cf

Best regards,
--  
Guru Das Srinagesh <[email protected]>