Rollup merge of #142645 - Urgau:usage-non_upper_case_globals, r=fmease

Also emit suggestions for usages in the `non_upper_case_globals` lint

This PR adds suggestions for all the usages of the renamed item in the warning of the  `non_upper_case_globals` lint.

Fixes https://github.com/rust-lang/rust/issues/124061

compiler/rustc_lint/src/lints.rs

@@ -1353,6 +1353,8 @@ pub(crate) struct NonUpperCaseGlobal<'a> {
     pub name: &'a str,
     #[subdiagnostic]
     pub sub: NonUpperCaseGlobalSub,
+    #[subdiagnostic]
+    pub usages: Vec<NonUpperCaseGlobalSubTool>,
 }
 
 #[derive(Subdiagnostic)]
@@ -1362,14 +1364,29 @@ pub(crate) enum NonUpperCaseGlobalSub {
         #[primary_span]
         span: Span,
     },
-    #[suggestion(lint_suggestion, code = "{replace}", applicability = "maybe-incorrect")]
+    #[suggestion(lint_suggestion, code = "{replace}")]
     Suggestion {
         #[primary_span]
         span: Span,
+        #[applicability]
+        applicability: Applicability,
         replace: String,
     },
 }
 
+#[derive(Subdiagnostic)]
+#[suggestion(
+    lint_suggestion,
+    code = "{replace}",
+    applicability = "machine-applicable",
+    style = "tool-only"
+)]
+pub(crate) struct NonUpperCaseGlobalSubTool {
+    #[primary_span]
+    pub(crate) span: Span,
+    pub(crate) replace: String,
+}
+
 // noop_method_call.rs
 #[derive(LintDiagnostic)]
 #[diag(lint_noop_method_call)]