The -v verbose option for certain nvme commands like id-ctrl,
id-ns, smart-log, sanitize-log, etc. is practically a no-op since
it only prints latency info in addition to the regular output.
But at the same time, these commands already implement a -H human
readable option which prints additional useful info. So fix the
-v option to make it synonymous with the -H option here. And while
we are at it, move the latency info from current INFO level (i.e.
-v logging) to DEBUG level (i.e. -vv logging) since it is better
suited there.