Function ble_gap_read_local_irk 

pub unsafe extern "C" fn ble_gap_read_local_irk(
    out_irk: *mut u8,
) -> i32

Read local IRK command

@param out_irk Local Identity Resolving Key received from the Host

@return 0 on success; BLE_HS_EINVAL if @param out_irk is NULL