Merge changes Ic1411faf,I0ef22f28,I645b787d,Ief031db6,I5c494deb, ...

* changes:
  Remove unused def SMP_DEBUG
  Remove name from BTM_SecAddBleDevice
  Re-log stack/l2cap/l2c_ble::
  enum-ify link stack/acl/btm_acl::policy settings
  Streamline main/shim/acl::_reason
  Streamline stack/btm/btm_ble_addr::btm_ble_addr_resolvable
  Streamline stack/btm/btm_ble_gap::btm_ble_update_adv_flag
  Streamline stack/btm/btm_ble_addr::btm_ble_resolve_random_addr
  enum-ify stack/btm/btm_ble_gap::BTM_BLE_
  Add main/shim/acl_legacy_interface::auth_complete