Add btif/src/btif_gatt_client::bta_gattc_event_text

uint8_t rssi_request_client_if;

std::string bta_gattc_event_text(const tBTA_GATTC_EVT& event) {

  switch (event) {

    case BTA_GATTC_DEREG_EVT:

      return std::string("GATT client deregistered");

    case BTA_GATTC_OPEN_EVT:

      return std::string("GATTC open request status");

    case BTA_GATTC_CLOSE_EVT:

      return std::string("GATTC close request status");

    case BTA_GATTC_SEARCH_CMPL_EVT:

      return std::string("GATT discovery complete");

    case BTA_GATTC_SEARCH_RES_EVT:

      return std::string("GATT discovery result");

    case BTA_GATTC_SRVC_DISC_DONE_EVT:

      return std::string("GATT service discovery done");

    case BTA_GATTC_NOTIF_EVT:

      return std::string("GATT attribute notification");

    case BTA_GATTC_EXEC_EVT:

      return std::string("execute write complete");

    case BTA_GATTC_ACL_EVT:

      return std::string("ACL up");

    case BTA_GATTC_CANCEL_OPEN_EVT:

      return std::string("cancel open");

    case BTA_GATTC_SRVC_CHG_EVT:

      return std::string("service change");

    case BTA_GATTC_ENC_CMPL_CB_EVT:

      return std::string("encryption complete callback");

    case BTA_GATTC_CFG_MTU_EVT:

      return std::string("configure MTU complete");

    case BTA_GATTC_CONGEST_EVT:

      return std::string("congestion");

    case BTA_GATTC_PHY_UPDATE_EVT:

      return std::string("PHY change");

    case BTA_GATTC_CONN_UPDATE_EVT:

      return std::string("connection parameters update");

  }

}

void btif_gattc_upstreams_evt(uint16_t event, char* p_param) {

  LOG_VERBOSE("%s: Event %d", __func__, event);

  LOG_DEBUG("Event %s [%d]",

            bta_gattc_event_text(static_cast<tBTA_GATTC_EVT>(event)).c_str(),

            event);

  tBTA_GATTC* p_data = (tBTA_GATTC*)p_param;

  switch (event) {