ar71xx: refresh patches

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41365 3c298f89-4303-0410-b956-a3cf2f4a3e73
kernel: enable bridge igmp snooping

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41366 3c298f89-4303-0410-b956-a3cf2f4a3e73
kernel: implement optinal multicast->unicast conversion for igmp snooping

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41367 3c298f89-4303-0410-b956-a3cf2f4a3e73