soc: mediatek: mtk-svs: move svs_platform_probe into probe

Moving svs_platform_probe into driver probe function will allow us to
reduce svs_platform members. This will be done in a follow-up patch.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Roger Lu <roger.lu@mediatek.com>
Link: https://lore.kernel.org/r/20230111074528.29354-11-roger.lu@mediatek.com


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