Merge branch 'af_unix-set-skb-drop-reason-in-every-kfree_skb-path'

Kuniyuki Iwashima says:

====================
af_unix: Set skb drop reason in every kfree_skb() path.

There is a potential user for skb drop reason for AF_UNIX.

This series replaces some kfree_skb() in connect() and
sendmsg() paths and sets skb drop reason for the rest of
kfree_skb() in AF_UNIX.

Link: https://lore.kernel.org/netdev/CAAf2ycmZHti95WaBR3s+L5Epm1q7sXmvZ-EqCK=-oZj=45tOwQ@mail.gmail.com/
v2: https://lore.kernel.org/20250112040810.14145-1-kuniyu@amazon.com/
v1: https://lore.kernel.org/20250110092641.85905-1-kuniyu@amazon.com/
====================

Link: https://patch.msgid.link/20250116053441.5758-1-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>