rust: prelude: use the "kernel vertical" imports style

Format the Rust prelude to use the "kernel vertical" imports style [1].

No functional changes intended.

Link: https://docs.kernel.org/rust/coding-guidelines.html#imports [1]
Link: https://patch.msgid.link/20260208224659.18406-2-ojeda@kernel.org
[ Rebased. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

rust/kernel/prelude.rs

@@ -13,46 +13,100 @@
 
 #[doc(no_inline)]
 pub use core::{
-    mem::{align_of, align_of_val, size_of, size_of_val},
-    pin::Pin,
+    mem::{
+        align_of,
+        align_of_val,
+        size_of,
+        size_of_val, //
+    },
+    pin::Pin, //
 };
 
 pub use ::ffi::{
-    c_char, c_int, c_long, c_longlong, c_schar, c_short, c_uchar, c_uint, c_ulong, c_ulonglong,
-    c_ushort, c_void, CStr,
+    c_char,
+    c_int,
+    c_long,
+    c_longlong,
+    c_schar,
+    c_short,
+    c_uchar,
+    c_uint,
+    c_ulong,
+    c_ulonglong,
+    c_ushort,
+    c_void,
+    CStr, //
 };
 
-pub use crate::alloc::{flags::*, Box, KBox, KVBox, KVVec, KVec, VBox, VVec, Vec};
-
 #[doc(no_inline)]
-pub use macros::{export, fmt, kunit_tests, module, vtable};
+pub use macros::{
+    export,
+    fmt,
+    kunit_tests,
+    module,
+    vtable, //
+};
 
-pub use pin_init::{init, pin_data, pin_init, pinned_drop, InPlaceWrite, Init, PinInit, Zeroable};
+pub use pin_init::{
+    init,
+    pin_data,
+    pin_init,
+    pinned_drop,
+    InPlaceWrite,
+    Init,
+    PinInit,
+    Zeroable, //
+};
 
 pub use super::{
+    alloc::{
+        flags::*,
+        Box,
+        KBox,
+        KVBox,
+        KVVec,
+        KVec,
+        VBox,
+        VVec,
+        Vec, //
+    },
     build_assert,
     build_error,
     const_assert,
-    static_assert, //
+    current,
+    dev_alert,
+    dev_crit,
+    dev_dbg,
+    dev_emerg,
+    dev_err,
+    dev_info,
+    dev_notice,
+    dev_warn,
+    error::{
+        code::*,
+        Error,
+        Result, //
+    },
+    init::InPlaceInit,
+    pr_alert,
+    pr_crit,
+    pr_debug,
+    pr_emerg,
+    pr_err,
+    pr_info,
+    pr_notice,
+    pr_warn,
+    static_assert,
+    str::CStrExt as _,
+    try_init,
+    try_pin_init,
+    uaccess::UserPtr,
+    ThisModule, //
 };
 
 // `super::std_vendor` is hidden, which makes the macro inline for some reason.
 #[doc(no_inline)]
 pub use super::dbg;
-pub use super::{dev_alert, dev_crit, dev_dbg, dev_emerg, dev_err, dev_info, dev_notice, dev_warn};
-pub use super::{pr_alert, pr_crit, pr_debug, pr_emerg, pr_err, pr_info, pr_notice, pr_warn};
-
-pub use super::{try_init, try_pin_init};
-
-pub use super::error::{code::*, Error, Result};
-
-pub use super::{str::CStrExt as _, ThisModule};
-
-pub use super::init::InPlaceInit;
-
-pub use super::current;
-
-pub use super::uaccess::UserPtr;
 
 #[cfg(not(CONFIG_RUSTC_HAS_SLICE_AS_FLATTENED))]
 pub use super::slice::AsFlattened;