kbuild: use the upstream `alloc` crate

Switch away from our fork of the `alloc` crate. We remove it altogether
in the next commit.

Signed-off-by: Wedson Almeida Filho <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Miguel Ojeda <[email protected]>

1 files changed, 1 insertions, 0 deletions

diff --git a/rust/kernel/str.rs b/rust/kernel/str.rs
index a15ae90feed7..14ef4344cf6e 100644
--- a/rust/kernel/str.rs
+++ b/rust/kernel/str.rs
@@ -2,6 +2,7 @@
 
 //! String representations.
 
+use crate::alloc::vec_ext::VecExt;
 use alloc::alloc::AllocError;
 use alloc::vec::Vec;
 use core::fmt::{self, Write};