i40evf: fix overlong BIT defines

The defines from the RSS enabling call were mistakenly
missed in the patches to the i40e which should have been
to i40evf as well.

This is a follow up to (commit ed921559886dd40528) "fix
32 bit build warnings".

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>