patches/openwrt: fix multi-CPU DSA code breaking DSA on MOX

This caused Topaz not working when in combination with Peridot.

Signed-off-by: Marek Behún <marek.behun@nic.cz>

patches/openwrt/wip/0009-mvebu-turris-omnia-multi-cpu-dsa.patch

@@ -62,7 +62,7 @@ index 0000000000..1f0fd55727
 + 	/* Frames from user ports can egress any local DSA links and CPU ports,
 + 	 * as well as any local member of their bridge group.
 + 	 */
-++	upstream = dsa_port_upstream_port(ds, port);
+++	upstream = dsa_port_upstream_port(chip->ds, port);
 + 	for (i = 0; i < mv88e6xxx_num_ports(chip); ++i)
 +-		if (dsa_is_cpu_port(chip->ds, i) ||
 ++		if ((dsa_is_cpu_port(chip->ds, i) && i == upstream) ||