Merge branch 'mlx4-vf-counters'

Or Gerlitz says:

====================
mlx4 driver update (+ new VF ndo)

This series from Eran and Hadar is further dealing with traffic
counters in the mlx4 driver, this time mostly around SRIOV.

We added a new ndo to read the VF counters through the PF netdev
netlink infrastructure plus mlx4 implementation for that ndo.

changes from V0:
  - applied feedback from John to use nested netlink encoding
    for the VF counters so we can extend it later
  - add handling of single ported VFs in the mlx4_en driver new ndo
  - avoid chopping the FW counters from 64 to 32 bits in mlx4_en PF flow
====================

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