Reduce coupling to implementation details of the formatting machinery by
avoiding direct use for `core`'s formatting traits and macros.

This backslid in commit eafedbc7c050 ("rust_binder: add Rust Binder
driver").

Signed-off-by: Tamir Duberstein <tamird@gmail.com>
---
 drivers/android/binder/error.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/android/binder/error.rs b/drivers/android/binder/error.rs
index 9921827267d0..b24497cfa292 100644
--- a/drivers/android/binder/error.rs
+++ b/drivers/android/binder/error.rs
@@ -2,6 +2,7 @@
 
 // Copyright (C) 2025 Google LLC.
 
+use kernel::fmt;
 use kernel::prelude::*;
 
 use crate::defs::*;
@@ -76,8 +77,8 @@ fn from(_: kernel::alloc::AllocError) -> Self {
     }
 }
 
-impl core::fmt::Debug for BinderError {
-    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+impl fmt::Debug for BinderError {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match self.reply {
             BR_FAILED_REPLY => match self.source.as_ref() {
                 Some(source) => f

-- 
2.51.0