net: mscc: ocelot: parse flower action before key

When we'll make the switch to multiple chain offloading, we'll want to
know first what VCAP block the rule is offloaded to. This impacts what
keys are available. Since the VCAP block is determined by what actions
are used, parse the action first.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>