Since commit f1ad5338a4d5 ("of: Fix "dma-ranges" handling for bus
controllers") was merge, we don't need a dma-ranges property for IOMMU
in mediatek video codec.
We remove the dma-ranges property and fix the example in
mediatek,vcodec-subdev-decoder.yaml
Signed-off-by: Allen-KH Cheng <allen-kh.cheng@xxxxxxxxxxxx>