[][kernel][common][dts][Fix the mt7981 with an8855 syntax error dts]

[Description]
Fix the mt7981 with an8855 syntax error dts after clean the space indent.
Fixes: ("[kernel][common][net][Add AN8855 dsa and gsw driver]")

[Release-log]
N/A

Change-Id: I3f091d9b4298af633c05f8106b26ac6b43115d1c
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/8772425
1 file changed