arm64: dts: mediatek: mt8167: add smi_common node

Add the smi_common node.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Fabien Parent <fparent@baylibre.com>
Link: https://lore.kernel.org/r/20210405200821.2203458-2-fparent@baylibre.com


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