ASoC: Clean up kernel-doc for snd_soc_dai_set_fmt

There is no argument named @clk_id in snd_soc_dai_set_fmt,
remove its' comment.

Signed-off-by: Qinghuang Feng <qhfeng.kernel@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>