[compiler-rt] [test] Disable MPROTECT for XRay tests on NetBSD

Author: mgorny

compiler-rt/test/xray/lit.cfg.py

@@ -61,3 +61,6 @@ def build_invocation(compile_flags):
       config.unsupported = True
   else:
     config.unsupported = True
+
+if config.host_os == 'NetBSD':
+  config.substitutions.insert(0, ('%run', config.netbsd_nomprotect_prefix))