MediaTek iommu has already controlled the masters' iova ranges by the
master's larb/port id. then the dma-ranges property is unnecessary for
the master's node. the master is vcodec here.
Cc: Tiffany Lin <tiffany.lin@xxxxxxxxxxxx>
Cc: Andrew-CT Chen <andrew-ct.chen@xxxxxxxxxxxx>
Cc: Yunfei Dong <yunfei.dong@xxxxxxxxxxxx>
Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@xxxxxxxxxx>
Cc: Matthias Brugger <matthias.bgg@xxxxxxxxx>
Signed-off-by: Yong Wu <yong.wu@xxxxxxxxxxxx>