i40e: Update feature flags to reflect newly enabled features

i40e: Update feature flags to reflect newly enabled features

BugLink: http://bugs.launchpad.net/bugs/1547674
Recent changes should have enabled support for IPv6 based tunnels and
support for TSO with outer UDP checksums.  As such we can update the
feature flags to reflect that.

In addition we can clean-up the flags that aren't needed such as SCTP and
RXCSUM since having the bits there doesn't add any value.

Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from net-next commit bc5d252b363cca63b7ddc1e20dd8b8b242631006)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>