Merge branch 'hv_netvsc-notification-and-namespace-fixes'

Stephen Hemminger says:

====================
hv_netvsc: notification and namespace fixes

This set of patches addresses two set of fixes. First it backs out
the common callback model which was merged in net-next without
completing all the review feedback or getting maintainer approval.

Then it fixes the transparent VF management code to handle network
namespaces.
====================

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