ASoC: Intel: Fix build with CONFIG_SLEEP enabled.

Fix the following build error when CONFIG_SLEEP is enabled and CONFIG_RUNTIME
is disabled. The BDW ADSP sleep PM functionality depends on the runtime pm
calls for context save/restore.

All error/warnings:

>> ERROR: "snd_soc_suspend" undefined!
>> ERROR: "snd_soc_resume" undefined!
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/sst-haswell-pcm.c

@@ -1003,7 +1003,6 @@ static int hsw_pcm_dev_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM
 #ifdef CONFIG_PM_RUNTIME
 
 static int hsw_pcm_runtime_idle(struct device *dev)
@@ -1063,6 +1062,8 @@ static int hsw_pcm_runtime_resume(struct device *dev)
 #define hsw_pcm_runtime_resume		NULL
 #endif
 
+#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PM_RUNTIME)
+
 static void hsw_pcm_complete(struct device *dev)
 {
 	struct hsw_priv_data *pdata = dev_get_drvdata(dev);
@@ -1158,6 +1159,11 @@ static int hsw_pcm_prepare(struct device *dev)
 	return 0;
 }
 
+#else
+#define hsw_pcm_prepare		NULL
+#define hsw_pcm_complete	NULL
+#endif
+
 static const struct dev_pm_ops hsw_pcm_pm = {
 	.runtime_idle = hsw_pcm_runtime_idle,
 	.runtime_suspend = hsw_pcm_runtime_suspend,
@@ -1165,9 +1171,6 @@ static const struct dev_pm_ops hsw_pcm_pm = {
 	.prepare = hsw_pcm_prepare,
 	.complete = hsw_pcm_complete,
 };
-#else
-#define hsw_pcm_pm	NULL
-#endif
 
 static struct platform_driver hsw_pcm_driver = {
 	.driver = {