Reformat use declarations.

The previous commit updated `rustfmt.toml` appropriately. This commit is
the outcome of running `x fmt --all` with the new formatting options.

compiler/rustc_codegen_llvm/src/debuginfo/utils.rs

@@ -1,13 +1,12 @@
 // Utility Functions.
 
-use super::namespace::item_namespace;
-use super::CodegenUnitDebugContext;
-
 use rustc_hir::def_id::DefId;
 use rustc_middle::ty::layout::{HasParamEnv, LayoutOf};
 use rustc_middle::ty::{self, Ty};
 use tracing::trace;
 
+use super::namespace::item_namespace;
+use super::CodegenUnitDebugContext;
 use crate::common::CodegenCx;
 use crate::llvm;
 use crate::llvm::debuginfo::{DIArray, DIBuilder, DIDescriptor, DIScope};