docs: fix TSO feature status in i40e driver documentation

TSO is only supported on the scalar path so change the status to
partially supported.

Fixes: 9ed94e5 ("i40e: add vector Rx")
Cc: [email protected]

Signed-off-by: Ciara Loftus <[email protected]>
Acked-by: Bruce Richardson <[email protected]>

Author: cloftus

doc/guides/nics/features/i40e.ini

@@ -16,7 +16,7 @@ Runtime Tx queue setup = Y
 Burst mode info      = Y
 Power mgmt address monitor = Y
 Scattered Rx         = Y
-TSO                  = Y
+TSO                  = P
 Promiscuous mode     = Y
 Allmulticast mode    = Y
 Unicast MAC filter   = Y