net: lan966x: Add port police support using tc-matchall

Add support for port police. It is possible to police only on the
ingress side. To be able to add police support also it was required to
add tc-matchall classifier offload support.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>