Add netdev mailing list and some more udp.h headers to the UDP section.
This is now more consistent with the TCP section.

Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20241009-maint-net-hdrs-v2-2-f2c86e7309c8@kernel.org


Signed-off-by: Jakub Kicinski <kuba@kernel.org>