disable cpu isolcpus

hc

2023-12-09 958e46acc8e900e8569dd467c1af9b8d2d019394

 kernel/tools/testing/selftests/membarrier/.gitignore
..
..
@@ -1 +1,3 @@
1
-membarrier_test
1
+# SPDX-License-Identifier: GPL-2.0-only
2
+membarrier_test_multi_thread
3
+membarrier_test_single_thread