Apart from a dai_link_list variable, the mtk_sof_priv currently holds
data that never gets modified during runtime.

Constify the mtk_sof_priv structure and move the SOF dai_link_list as
sof_dai_link_list in struct mtk_soc_card_data, which is a structure
that already holds the card's machine specific, runtime modified data.

This allows to safely pass the mtk_sof_priv structure as platform data
for the commonized card probe mechanism.
Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20240416071410.75620-3-angelogioacchino.delregno@collabora.comSigned-off-by: Mark Brown <broonie@kernel.org>