ASoC: Intel: byt-rt5640: Use card PM ops from core

Use card PM ops from ASoC core instead of defining custom PM ops here since
we are calling anyway common suspend/resume callbacks.
Signed-off-by: NJarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: NMark Brown <broonie@linaro.org>

sound/soc/intel/byt-rt5640.c

@@ -138,17 +138,6 @@ static struct snd_soc_card byt_rt5640_card = {
 	.num_dapm_routes = ARRAY_SIZE(byt_rt5640_audio_map),
 };
 
-#ifdef CONFIG_PM_SLEEP
-static const struct dev_pm_ops byt_rt5640_pm_ops = {
-	.suspend = snd_soc_suspend,
-	.resume = snd_soc_resume,
-};
-
-#define BYT_RT5640_PM_OPS	(&byt_rt5640_pm_ops)
-#else
-#define BYT_RT5640_PM_OPS	NULL
-#endif
-
 static int byt_rt5640_probe(struct platform_device *pdev)
 {
 	struct snd_soc_card *card = &byt_rt5640_card;
@@ -162,7 +151,7 @@ static struct platform_driver byt_rt5640_audio = {
 	.driver = {
 		.name = "byt-rt5640",
 		.owner = THIS_MODULE,
-		.pm = BYT_RT5640_PM_OPS,
+		.pm = &snd_soc_pm_ops,
 	},
 };
 module_platform_driver(byt_rt5640_audio)