btm_ble_start_inquiry() function

* Function btm_ble_start_inquiry * Description This function is called to start BLE inquiry procedure. * If the duration is zero, the periodic inquiry mode is cancelled. * Parameters: mode - GENERAL or LIMITED inquiry * p_inq_params - pointer to the BLE inquiry parameter. * p_results_cb - callback returning pointer to results (tBTM_INQ_RESULTS) * p_cmpl_cb - callback indicating the end of an inquiry * Returns BTM_CMD_STARTED if successfully started * BTM_NO_RESOURCES if could not allocate a message buffer * BTM_BUSY - if an inquiry is already active