Introduce a new function nxsched_tick_expiration() to replace
nxsched_alarm_tick_expiration(). The new function provides a
common implementation that can be shared by both the alarm
and timer architectures.
This change reduces code duplication and provides a unified
function that can be directly reused.
Signed-off-by: Chengdong Wang <wangchengdong@lixiang.com>
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