ASoC: Export snd_soc_runtime_set_dai_fmt()

Export snd_soc_runtime_set_dai_fmt() so it can be used in modules.

Fixes: ce64c8b9 ("ASoC: Add helper function for changing the DAI link format")
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-core.c

@@ -1491,6 +1491,7 @@ int snd_soc_runtime_set_dai_fmt(struct snd_soc_pcm_runtime *rtd,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(snd_soc_runtime_set_dai_fmt);
 
 static int snd_soc_instantiate_card(struct snd_soc_card *card)
 {