linux-imx

ASoC: don't use rtd->codec on soc_dev_attr_is_visible()

rtd->codec will be removed soon.
checking rtd->num_codecs is enough

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>