Add a break on one architecture.

Author: thejpster

examples/versatileab/src/bin/hello.rs

@@ -16,5 +16,7 @@ fn my_main() -> ! {
     let y = x * 2.0;
     println!("Hello, this is semihosting! x = {:0.3}, y = {:0.3}", x, y);
     versatileab::want_panic();
+    #[cfg(arm_architecture = "v7-a")]
+    no_such_function();
     panic!("I am an example panic");
 }