i40e: Expose some registers to program parser, FD and RSS logic

This patch adds 7 new register definitions for programming the
parser, flow director and RSS blocks in the HW.

Change-ID: I31e76673125275f3c69a14c646361919d04dc987
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>