Merge branch 'netdevsim-add-devlink-health-reporters-support'

Jiri Pirko says:

====================
netdevsim: add devlink health reporters support

This patchset adds support for devlink health reporter interface
testing. First 2 patches are small dependencies of the last 2.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>