Rollup merge of rust-lang#141568 - onur-ozkan:141393-fix, r=Kobzol

dist: make sure llvm-project submodule is present

Zero-config `x install` fails when bootstrap tries to copy files from the LLVM submodule because it's not properly initialized/handled. This diff handles that.

Fixes rust-lang#141393

Author: compiler-errors

src/bootstrap/src/core/build_steps/dist.rs

@@ -2282,6 +2282,10 @@ impl Step for LlvmTools {
             }
         }
 
+        if !builder.config.dry_run() {
+            builder.require_submodule("src/llvm-project", None);
+        }
+
         builder.ensure(crate::core::build_steps::llvm::Llvm { target });
 
         let mut tarball = Tarball::new(builder, "llvm-tools", &target.triple);
@@ -2400,6 +2404,10 @@ impl Step for RustDev {
             }
         }
 
+        if !builder.config.dry_run() {
+            builder.require_submodule("src/llvm-project", None);
+        }
+
         let mut tarball = Tarball::new(builder, "rust-dev", &target.triple);
         tarball.set_overlay(OverlayKind::Llvm);
         // LLVM requires a shared object symlink to exist on some platforms.