Merge branch 'add-missing-netlink-error-message-macros-to-coccinelle-test'

Gal Pressman says:

====================
Add missing netlink error message macros to coccinelle test

The newline_in_nl_msg.cocci test is missing some variants in the list of
checked macros, add them and fix all reported issues.
====================

Link: https://patch.msgid.link/20250226093904.6632-1-gal@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>