ASoC: soc-pcm: merge soc_pcm_hw_update_format/subformat()

ASoC: soc-pcm: merge soc_pcm_hw_update_format/subformat()

format() and subformat() should be handled in the same time, no need to
have each functions. Let's merge these

	soc_pcm_hw_update_format()
	soc_pcm_hw_update_subformat()

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: Cezary Rojewski <cezary.rojewski@intel.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Reviewed-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://patch.msgid.link/87v7soz664.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>