net: sparx5: add bookkeeping code for matchall rules

In preparation for new tc matchall rules, we add a bit of bookkeeping
code to keep track of them. The rules are identified by the cookie
passed from the tc stack.

Signed-off-by: Daniel Machon <daniel.machon@microchip.com>
Reviewed-by: Steen Hegelund <Steen.Hegelund@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>