Merge branch 'mlx4'

Or Gerlitz says:

====================
mlx4 driver RC fixes

Ido's patch should go to -stable of >= 3.14 too, the issue is older but it
hits us with VXLAN for which driver support dates there.

As for Jack's fix, for the time being, picking it to 4.0 is OK.
====================

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