Merge branch 'drivers-net-constify-static-ops-variables'

Rikard Falkeborn says:

====================
drivers/net: constify static ops-variables

This series constifies a number of static ops variables, to allow the
compiler to put them in read-only memory. Compile-tested only.
====================

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