ASoC: fsl: Use #ifdef instead of #if for CONFIG_PM_SLEEP

Change them to #ifdef as CONFIG_PM_SLEEP might not be defined at all.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/fsl/fsl_esai.c

@@ -900,7 +900,7 @@ static const struct of_device_id fsl_esai_dt_ids[] = {
 };
 MODULE_DEVICE_TABLE(of, fsl_esai_dt_ids);
 
-#if CONFIG_PM_SLEEP
+#ifdef CONFIG_PM_SLEEP
 static int fsl_esai_suspend(struct device *dev)
 {
 	struct fsl_esai *esai = dev_get_drvdata(dev);

sound/soc/fsl/fsl_sai.c

@@ -806,7 +806,7 @@ static const struct of_device_id fsl_sai_ids[] = {
 };
 MODULE_DEVICE_TABLE(of, fsl_sai_ids);
 
-#if CONFIG_PM_SLEEP
+#ifdef CONFIG_PM_SLEEP
 static int fsl_sai_suspend(struct device *dev)
 {
 	struct fsl_sai *sai = dev_get_drvdata(dev);