[][openwrt][common][app][Add an8855 switch command support]

[Description]
Add an8855 switch command support.

[Release-log]
N/A

Change-Id: Id8d393a05faf80982c3fd9e89538f23de130e733
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/8766736
48 files changed