ASoC: mediatek: mt8195: revise mt8195-mt6359-rt1019-rt5682.c

Revise driver for the coming driver combination.
There are two major parts including in the patch.
1. Apply some suggested changes used in mt8195-mt6359-rt1011-rt5682.c.
2. Reorder the layout for centralizing the codec related code.

Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220324053851.27350-2-trevor.wu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>