arm64: dts: mediatek: mt8183: correct MDP3 DMA-related nodes

[ Upstream commit 188ffcd7 ]

In order to generalize the node names, the DMA-related nodes
corresponding to MT8183 MDP3 need to be corrected.

Fixes: 60a2fb8d ("arm64: dts: mt8183: add MediaTek MDP3 nodes")
Signed-off-by: Moudy Ho <moudy.ho@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>