ASoC: SOF: mediatek: mt8195: Add generic pcm_{open,close} callbacks

Use the generic sof_stream_pcm_{open,close}() functions for the
pcm_{open,close} callbacks.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220906092727.37324-5-angelogioacchino.delregno@collabora.com


Signed-off-by: Mark Brown <broonie@kernel.org>