Add a generic TC actions handling for TC actions: "mirred",
"gact", "skbedit". This will be useful when introducing
BPF actions, as it uses TCA_BPF_ACT instead of TCA_FLOWER_ACT
Signed-off-by: Ophir Munk <ophirmu@mellanox.com>
Acked-by: Pascal Mazon <pascal.mazon@6wind.com>