Fixes ticker_by_next_slot_get for JIT scheduler by allowing iterating
through ticker nodes without ticks_slot information, and improves
performance for legacy ticker scheduling use.
To reduce the processing and context switching overhead, a new feature
is introduced via BT_TICKER_NEXT_SLOT_GET_MATCH, by which an operation
callback may be added via the ticker_next_slot_get_ext interface, and
the match function is then called when the ticker_job is processing the
request.
By returning true in this callback, iteration stops and normal operation
callback is invoked. If the match function returns false, node iteration
continues. This reduces the number of ticker_job executions for node
iteration.
Signed-off-by: Morten Priess <mtpr@oticon.com>
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