[PATCH] doc: announce rte_ipsec API changes

In case of event mode operations where event device can help in atomic sequence number increment across cores, sequence number need to be provided by the application instead of being updated in rte_ipsec or the PMD. To support this, a new flag ``RTE_IPSEC_SAFLAG_SQN_ASSIGN_DISABLE`` will be added

[PATCH] doc: announce rte_ipsec API changes

In case of event mode operations where event device can help in atomic sequence number increment across cores, sequence number need to be provided by the application instead of being updated in rte_ipsec or the PMD. To support this, a new flag ``RTE_IPSEC_SAFLAG_SQN_ASSIGN_DISABLE`` will be added