i40e: constify i40e_client_ops structure

i40e: constify i40e_client_ops structure

Orabug: 23176970

The i40e_client_ops structure is never modified, so declare it as const.

Done with the help of Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from commit 3949c4ac8cfa8ab3518a326c72eff1a2ff489bb9)
Signed-off-by: Brian Maly <brian.maly@oracle.com>
Conflicts:
	drivers/infiniband/hw/i40iw/i40iw_main.c