ixgbe: Make all unchanging ops structures const

ixgbe: Make all unchanging ops structures const

Orabug: 23177316

The source for the ops structure contents are const, so make them
so. Copy them in place with structure assignments instead of memcpys.
Make the mbx_ops accessed by reference instead of making a copy of
the source structure. Update copyright date on the touched files.

Reported-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from commit 37689010da28c6dfd9f59e60d7f42c47b775171c)
Signed-off-by: Brian Maly <brian.maly@oracle.com>