[][OpenWrt Dev][Add NMBM support]

[Description]
Add NMBM support

[Release-log]
N/A

Change-Id: I6a64185350eac5034d6470ecaa20761257346854
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/4580547
11 files changed