ALSA: hda/tegra: avoid build error without CONFIG_PM

The #ifdef protection around the PM functions is wrong, leading to
a failed reference in some configurations:

sound/pci/hda/hda_tegra.c: In function 'hda_tegra_runtime_suspend':
sound/pci/hda/hda_tegra.c:273:2: error: implicit declaration of function 'hda_tegra_disable_clocks'; did you mean 'hda_tegra_enable_clocks'? [-Werror=implicit-function-declaration]

Better remove the #ifdefs entirely and rely on the compiler silently
dropping unused functions marked __maybe_unused.

Fixes: 707e0759 ("ALSA: hda/tegra: implement runtime suspend/resume")
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/hda_tegra.c

@@ -219,7 +219,6 @@ static int hda_tegra_enable_clocks(struct hda_tegra *data)
 	return rc;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static void hda_tegra_disable_clocks(struct hda_tegra *data)
 {
 	clk_disable_unprepare(data->hda2hdmi_clk);
@@ -230,7 +229,7 @@ static void hda_tegra_disable_clocks(struct hda_tegra *data)
 /*
  * power management
  */
-static int hda_tegra_suspend(struct device *dev)
+static int __maybe_unused hda_tegra_suspend(struct device *dev)
 {
 	struct snd_card *card = dev_get_drvdata(dev);
 	int rc;
@@ -243,7 +242,7 @@ static int hda_tegra_suspend(struct device *dev)
 	return 0;
 }
 
-static int hda_tegra_resume(struct device *dev)
+static int __maybe_unused hda_tegra_resume(struct device *dev)
 {
 	struct snd_card *card = dev_get_drvdata(dev);
 	int rc;
@@ -255,10 +254,8 @@ static int hda_tegra_resume(struct device *dev)
 
 	return 0;
 }
-#endif /* CONFIG_PM_SLEEP */
 
-#ifdef CONFIG_PM
-static int hda_tegra_runtime_suspend(struct device *dev)
+static int __maybe_unused hda_tegra_runtime_suspend(struct device *dev)
 {
 	struct snd_card *card = dev_get_drvdata(dev);
 	struct azx *chip = card->private_data;
@@ -275,7 +272,7 @@ static int hda_tegra_runtime_suspend(struct device *dev)
 	return 0;
 }
 
-static int hda_tegra_runtime_resume(struct device *dev)
+static int __maybe_unused hda_tegra_runtime_resume(struct device *dev)
 {
 	struct snd_card *card = dev_get_drvdata(dev);
 	struct azx *chip = card->private_data;
@@ -292,7 +289,6 @@ static int hda_tegra_runtime_resume(struct device *dev)
 
 	return 0;
 }
-#endif /* CONFIG_PM */
 
 static const struct dev_pm_ops hda_tegra_pm = {
 	SET_SYSTEM_SLEEP_PM_OPS(hda_tegra_suspend, hda_tegra_resume)