hci: prefix authentication flags with AUTH_FLAG_*

hci: funnel pairing operation via hci_pairing_started and hci_pairing_complete

hci: track HCI_EVENT_IO_CAPABILITY_RESPONSE received

fix build

gap: cache own address on start advertising and connecting, provide getters

sm: cache local address in sm_connection_t at connection complete

gap: store link key in hci connection struct to allow authenticate after pairing without bonding

MISRAC2012-Rule-8.3_b: match function declaration and definition

MISRAC2012-Rule-8.3_b: match function declaration and definition

src: add title to header files

gap: re-configure advertisements after power cycle

hci: store remote ssp io capabilities

sm: move sm_pairing_failed_reason from setup into sm_connection_t, use sm_pairing_error more often

gap: allow to set security mode

gap: add get/set secure connections only mode

gap: add gap_inquiry_lap to allow for limited inquiry

hci: fix build without ENABLE_CLASSIC

hci: fix include

gap: support QoS setup with gap_qos_set

gap: support sniff subrating

hci: store io cap response auth requirements

gap: add gap_set_page_scan_activity and gap_set_set_page_scan_type

hci: use 4 bytes HCI_OUTGOING_PRE_BUFFER_SIZE if not defined and ENABLE_H5 is defined

hci: fix build

hci: add hci_set_sco_transport, call sco_transport->open() on sco connection complete