mlxsw: spectrum: Make port flood update more generic

Currently, there is a per port flood update function only for the UC
table. Make the function  more generic by changing the table type to be
an input.

Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>