ASoC: mediatek: mt8186: Allow setting shared clocks from machine driver

ASoC: mediatek: mt8186: Allow setting shared clocks from machine driver

Add a new function to configure the shared clock between two i2s ports,
and export it. This will allow the clock sharing to be set from the
machine driver instead of the devicetree.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220908161154.648557-9-nfraprado@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>