ALSA: aloop: Replace with DEFINE_SIMPLE_DEV_PM_OPS()

Use the new DEFINE_SIMPLE_DEV_PM_OPS() instead of SIMPLE_DEV_PM_OPS()
for code-simplification.  We need no longer CONFIG_PM_SLEEP ifdefs.
Just a cleanup, no functional changes.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20240207155140.18238-2-tiwai@suse.deSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/drivers/aloop.c

@@ -1830,7 +1830,6 @@ static int loopback_probe(struct platform_device *devptr)
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int loopback_suspend(struct device *pdev)
 {
 	struct snd_card *card = dev_get_drvdata(pdev);
@@ -1847,11 +1846,7 @@ static int loopback_resume(struct device *pdev)
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(loopback_pm, loopback_suspend, loopback_resume);
-#define LOOPBACK_PM_OPS	&loopback_pm
-#else
-#define LOOPBACK_PM_OPS	NULL
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(loopback_pm, loopback_suspend, loopback_resume);
 
 #define SND_LOOPBACK_DRIVER	"snd_aloop"
 
@@ -1859,7 +1854,7 @@ static struct platform_driver loopback_driver = {
 	.probe		= loopback_probe,
 	.driver		= {
 		.name	= SND_LOOPBACK_DRIVER,
-		.pm	= LOOPBACK_PM_OPS,
+		.pm	= &loopback_pm,
 	},
 };