arm64: dts: mediatek: mt8173: fix dtbs_check warning

Harmonize nodes names, compatibles and remove unused property.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/20210316092232.9806-6-chunfeng.yun@mediatek.com


Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>