[PATCH] rust: alloc: fix missing import needed for `rusttest`

[Miguel Ojeda <ojeda@kernel.org>]

There is a missing import of `NumaNode` that is used in the `rusttest`
target:

    error[E0412]: cannot find type `NumaNode` in this scope
      --> rust/kernel/alloc/allocator_test.rs:43:15
       |
    43 |         _nid: NumaNode,
       |               ^^^^^^^^ not found in this scope
       |
    help: consider importing this struct
       |
    12 + use crate::alloc::NumaNode;
       |

Thus fix it by adding it.

Fixes: 8405eafa6e94 ("rust: add support for NUMA ids in allocations")
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
---
akpm: please feel free to rebase this into the patch directly if that is
simpler/preferred.

We are looking into removing this file, possibly this cycle, so it is
not a big deal but meanwhile it would be nice to keep the branch clean
nevertheless.

 rust/kernel/alloc/allocator_test.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rust/kernel/alloc/allocator_test.rs b/rust/kernel/alloc/allocator_test.rs
index 283c02376458..13435ef8e652 100644
--- a/rust/kernel/alloc/allocator_test.rs
+++ b/rust/kernel/alloc/allocator_test.rs
@@ -9,7 +9,7 @@

 #![allow(missing_docs)]

-use super::{flags::*, AllocError, Allocator, Flags};
+use super::{flags::*, AllocError, Allocator, Flags, NumaNode};
 use core::alloc::Layout;
 use core::cmp;
 use core::ptr;
--
2.50.1