For the NVMe device given, sends the Toshiba vendor log
request and either saves the result to a file or dumps the content to stdout.
The <device> parameter is mandatory and may be either the NVMe
character device (ex: /dev/nvme0), or a namespace block device (ex:
/dev/nvme0n1).
The log contents may be associated with the controller, in which case the
namespace parameter is ignored.
Two logs exist, page 0xC0 (log page directory) and page 0xCA (vendor log page)
This will only work on Toshiba devices supporting this feature.