arm64: dts: mediatek: mt8195: add MMSYS configuration for VPPSYS

With the change of the MMSYS binding file for MT8195, the compatible
name of VPPSYS in dts need to be fixed to match the definition.

Signed-off-by: Roy-CW.Yeh <roy-cw.yeh@mediatek.com>
Signed-off-by: Moudy Ho <moudy.ho@mediatek.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20230206091109.1324-3-moudy.ho@mediatek.com


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