Convert all imports in the devres to use "kernel vertical" style. Drop
unnecessary imports covered by prelude::*.

Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Signed-off-by: Zhi Wang <zhiw@nvidia.com>
---
 rust/kernel/devres.rs | 54 +++++++++++++++++++++++++++++++++++--------
 1 file changed, 45 insertions(+), 9 deletions(-)

diff --git a/rust/kernel/devres.rs b/rust/kernel/devres.rs
index 10a6a1789854..3376c7090ccd 100644
--- a/rust/kernel/devres.rs
+++ b/rust/kernel/devres.rs
@@ -8,13 +8,28 @@
 use crate::{
     alloc::Flags,
     bindings,
-    device::{Bound, Device},
-    error::{to_result, Error, Result},
-    ffi::c_void,
+    device::{
+        Bound,
+        Device, //
+    },
+    error::{
+        to_result, //
+    },
     prelude::*,
-    revocable::{Revocable, RevocableGuard},
-    sync::{aref::ARef, rcu, Completion},
-    types::{ForeignOwnable, Opaque, ScopeGuard},
+    revocable::{
+        Revocable,
+        RevocableGuard, //
+    },
+    sync::{
+        aref::ARef,
+        rcu,
+        Completion, //
+    },
+    types::{
+        ForeignOwnable,
+        Opaque,
+        ScopeGuard, //
+    },
 };
 
 use pin_init::Wrapper;
@@ -52,7 +67,18 @@ struct Inner<T: Send> {
 /// # Examples
 ///
 /// ```no_run
-/// # use kernel::{bindings, device::{Bound, Device}, devres::Devres, io::{Io, IoRaw}};
+/// # use kernel::{
+/// #   bindings,
+/// #   device::{
+/// #       Bound,
+/// #       Device, //
+/// #   },
+/// #   devres::Devres,
+/// #   io::{
+/// #       Io,
+/// #       IoRaw, //
+/// #   }, //
+/// # };
 /// # use core::ops::Deref;
 ///
 /// // See also [`pci::Bar`] for a real example.
@@ -230,7 +256,11 @@ pub fn device(&self) -> &Device {
     ///
     /// ```no_run
     /// # #![cfg(CONFIG_PCI)]
-    /// # use kernel::{device::Core, devres::Devres, pci};
+    /// # use kernel::{
+    /// #   device::Core,
+    /// #   devres::Devres,
+    /// #   pci, //
+    /// # };
     ///
     /// fn from_core(dev: &pci::Device<Core>, devres: Devres<pci::Bar<0x4>>) -> Result {
     ///     let bar = devres.access(dev.as_ref())?;
@@ -333,7 +363,13 @@ fn register_foreign<P>(dev: &Device<Bound>, data: P) -> Result
 /// # Examples
 ///
 /// ```no_run
-/// use kernel::{device::{Bound, Device}, devres};
+/// use kernel::{
+///     device::{
+///         Bound,
+///         Device, //
+///     },
+///     devres, //
+/// };
 ///
 /// /// Registration of e.g. a class device, IRQ, etc.
 /// struct Registration;
-- 
2.51.0