rust: kernel: enable doc_cfg unstable feature

ojeda · ojeda · commit 3e2a3b11555e · 2021-07-15T01:42:10.000+02:00
Closes #442. Suggested-by: Finn Behrens <me@kloenk.de> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
diff --git a/rust/kernel/lib.rs b/rust/kernel/lib.rs
@@ -20,6 +20,7 @@
     const_panic,
     const_raw_ptr_deref,
     const_unreachable_unchecked,
+    doc_cfg,
     receiver_trait,
     try_reserve
 )]
