Merge branch 'devlink-health' into next

Aya Levin  says:

====================

This series adds support for devlink health commands:
 devlink health show     [ DEV reporter REPORTER_NAME ]
 devlink health recover    DEV reporter REPORTER_NAME
 devlink health diagnose   DEV reporter REPORTER_NAME
 devlink health dump show  DEV reporter REPORTER_NAME
 devlink health dump clear DEV reporter REPORTER_NAME
 devlink health set        DEV reporter REPORTER_NAME { grace_period | auto_recover } { msec | boolean }

The first patch refactors the validation of input parameters, which
grow way too long. Second and third patches fix bugs that were
discovered during the devlink health development. The forth patch adds
helper functions which enable output of value and labels separately.
Patches 5-10 add the devlink health functionality by command, the last
is the man page.

====================

Signed-off-by: David Ahern <dsahern@gmail.com>