[][Update processing flow for multicast packets]

[Description]
Change processing flow for multicast packets to
prevent PSE hang issue.

[Release-log]
N/A

Change-Id: Id9178629ca21de8ca3e3d3f41a7e61608abe44f4
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/4903739
1 file changed