[PATCH] selftests: drivers: net: fix name not defined

[Alessandro Zanni <alessandro.zanni87@xxxxxxxxx>]

This fix solves this error, when calling kselftest with targets "drivers/net":

File "tools/testing/selftests/net/lib/py/nsim.py", line 64, in __init__
  if e.errno == errno.ENOSPC:
NameError: name 'errno' is not defined

The module errno makes available standard error system symbols.

Signed-off-by: Alessandro Zanni <alessandro.zanni87@xxxxxxxxx>
---
 tools/testing/selftests/net/lib/py/nsim.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/net/lib/py/nsim.py b/tools/testing/selftests/net/lib/py/nsim.py
index f571a8b3139b..1a8cbe9acc48 100644
--- a/tools/testing/selftests/net/lib/py/nsim.py
+++ b/tools/testing/selftests/net/lib/py/nsim.py
@@ -1,5 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 
+import errno
 import json
 import os
 import random
-- 
2.43.0