Retrieves the NVMe Firmware log page from an NVMe device and provides
the returned structure.
The <device> parameter is mandatory and may be either the NVMe character
device (ex: /dev/nvme0), or a namespace block device (ex: /dev/nvme0n1).
On success, the returned f/w log structure may be returned in one of
several ways depending on the option flags; the structure may parsed by
the program and printed in a readable format or the raw buffer may be
printed to stdout for another program to parse.