net: Revert devlink health changes.

net: Revert devlink health changes.

This reverts the devlink health changes from 9/17/2019,
Jiri wants things to be designed differently and it was
agreed that the easiest way to do this is start from the
beginning again.

Commits reverted:

98de2918a9744ed8798e8692d5b6a458bf241203
9925c3a9d3dbc3a7ba0137f5881bd45ee39c8e40
71c5f8e628db04c487090115cb0dd07dd9276ebf
f6c761f45adceac4a16a222527326ad6c3f740e7
3ecb1e09c433ec293dc1d867be496ea7a7d7b716
db1014f1614c083b0110e726e63ceb8d151a21f5
47494be14933602a537adbb555d882c3b22906a3
9c08d7f2041a2fb5acc1e81cb4ef362f59844c29
5b54d60b12a7594c869e95844a470999471a3061
c56414c3c5b70c4b7fab3fdc7ffdd06846f1e6b9
c77dd24c094fd0e07e77a7ac6fb8c1f5ee94ad66

And the follow-on build fix:

o33a0efa4baecd689da9474ce0e8b673eb6931c60

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