Merge branch 'devlink-move-reload-fail-indication-to-devlink-core-and-expose-to-user'

Jiri Pirko says:

====================
net: devlink: move reload fail indication to devlink core and expose to user

First two patches are dependencies of the last one. That moves devlink
reload failure indication to the devlink code, so the drivers do not
have to track it themselves. Currently it is only mlxsw, but I will send
a follow-up patchset that introduces this in netdevsim too.
====================

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