Add support to configure and use periodic event timers in
software timer adapter.
The structure ``rte_event_timer_adapter_stats`` is extended
by adding a new field, ``evtim_drop_count``. This stat
represents the number of times an event_timer expiry event
is dropped by the event timer adapter.
Updated the software eventdev pmd timer_adapter_caps_get
callback function to report the support of periodic
event timer capability.
Signed-off-by: Naga Harish K S V <s.v.naga.harish.k@intel.com>
Acked-by: Erik Gabriel Carrillo <erik.g.carrillo@intel.com>