[][mt7988][Add append-opteenode in kernel command]

[Description]
Add the command,append-opteenode, to kernel command.
If the optee open in openwrt, it will adds optee node
in kernel dtb automatically.
If not, nothing will happended.

[Release-log]
N/A

Change-Id: I957b33619b06e1b27b1103ba58329350dc146fa8
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7599917
1 file changed