[][openwrt-24][common][bsp][Add initial support for openwrt master filogic target]

[Description]
Add initial support for filogic target from openwrt master

[Release-log]
N/A

Change-Id: Ib9d44bdf74b05dc445679001e988b2f1fb8d05b6
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/9273335
18 files changed