extras: ata_id - do not log error if HDIO_GET_IDENTITY fails

<tomegun> kay: is this a valid issue: https://bugs.archlinux.org/task/27060 ?
<kay> tomegun: udev does not really care if that fails
<tomegun> kay: the suggestion there is to treat EINVAL the same way we treat ENOTTY (i.e. as an info only)
<tomegun> if it really does not matter it might make sense to avoid bogus bug reports
<kay> tomegun: done