[ExecuTorch] Arm Ethos: Always verbose all for Vela

Pull Request resolved: #8406

Better to have the output then to have to rerun it.
ghstack-source-id: 265972753
@exported-using-ghexport

Differential Revision: [D69503726](https://our.internmc.facebook.com/intern/diff/D69503726/)

Author: digantdesai

backends/arm/arm_vela.py

@@ -51,6 +51,7 @@ def vela_compile(tosa_graph, args: List[str], shape_order=None):
         output_dir = os.path.join(tmpdir, "output")
         args.append(f"--output-dir={output_dir}")
         args.append(tosa_path)
+        args.append("--verbose-all")
         vela.main(" ".join(args).split(" "))
 
         if any("ethos-u85" in arg for arg in args) or any(