ASoC: soc-pcm: add soc_pcm_hw_update_rate()

To update hw, we need to follow setting order

	1) set hw->rates
	2) call snd_pcm_limit_hw_rates()
	3) update hw->rate_min/max

To avoid random settings, this patch adds new soc_pcm_hw_update_rate()
and share updating code.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/87sg6c90qv.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>