soc: mediatek: mtk-mmsys: Add MODULE_DEVICE_TABLE() to allow auto-load

Allow module auto-loading by adding a MODULE_DEVICE_TABLE for
of_match_mmsys.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20230222094253.23678-5-angelogioacchino.delregno@collabora.com


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