Clean up imports in `str.rs`. This makes future code manipulation more
manageable.

Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
---
 rust/kernel/str.rs | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/rust/kernel/str.rs b/rust/kernel/str.rs
index 6c892550c0ba..082790b7a621 100644
--- a/rust/kernel/str.rs
+++ b/rust/kernel/str.rs
@@ -2,12 +2,13 @@
 
 //! String representations.
 
-use crate::alloc::{flags::*, AllocError, KVec};
-use crate::fmt::{self, Write};
+use crate::{
+    alloc::{flags::*, AllocError, KVec},
+    fmt::{self, Write},
+    prelude::*,
+};
 use core::ops::{self, Deref, DerefMut, Index};
 
-use crate::prelude::*;
-
 /// Byte string without UTF-8 validity guarantee.
 #[repr(transparent)]
 pub struct BStr([u8]);

-- 
2.47.2