perf mutex: Add annotations for LOCKS_EXCLUDED and LOCKS_RETURNED

Used to annotate when locks shouldn't be held for a function or if a
function returns a lock that's used by later mutex lock unlock
operations.

Signed-off-by: Ian Rogers <irogers@google.com>
Link: https://lore.kernel.org/r/20250318043151.137973-2-irogers@google.com


Signed-off-by: Namhyung Kim <namhyung@kernel.org>