selftests/net: psp: add dev-get, no-nsid, and cleanup tests

Add the following 3 tests:

- _psp_dev_get_check_netkit_psp_assoc: verifies dev-get output in both
  host and guest namespaces, checking assoc-list, by-association flag,
  and nsid values
- _dev_assoc_no_nsid: tests dev-assoc and dev-disassoc without the nsid
  attribute, verifying ifindex lookup in the caller's namespace
- _psp_dev_assoc_cleanup_on_netkit_del: verifies that deleting the
  associated netkit interface properly cleans up the assoc-list, using
  a disposable netkit pair to avoid disturbing the shared environment

Signed-off-by: Wei Wang <weibunny@fb.com>
Link: https://patch.msgid.link/20260608233118.2694144-11-weibunny.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

0 files changed, 0 insertions, 0 deletions