selftests: add .gitignore for efivarfs

Signed-off-by: Yuan Sun <sunyuan3@huawei.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
diff --git a/tools/testing/selftests/efivarfs/.gitignore b/tools/testing/selftests/efivarfs/.gitignore
new file mode 100644
index 0000000..3361849
--- /dev/null
+++ b/tools/testing/selftests/efivarfs/.gitignore
@@ -0,0 +1,2 @@
+create-read
+open-unlink