list: add "list_del_init_careful()" to go with "list_empty_careful()"

[ Upstream commit c6fe44d9 ]

That gives us ordering guarantees around the pair.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Stable-dep-of: 2192bba0 ("epoll: ep_autoremove_wake_function should use list_del_init_careful")
Signed-off-by: Sasha Levin <sashal@kernel.org>