Add notes support to llvm_readobj

Author: Rejyr

src/tools/run-make-support/src/llvm.rs

@@ -102,6 +102,12 @@ impl LlvmReadobj {
         self
     }
 
+    /// Pass `--notes` to display all notes.
+    pub fn notes(&mut self) -> &mut Self {
+        self.cmd.arg("--notes");
+        self
+    }
+
     /// Specify the section to display.
     pub fn section(&mut self, section: &str) -> &mut Self {
         self.cmd.arg("--string-dump");