ALSA: es1938: Simplify 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.

This ends up with the allocation of a few additional bytes for the
register dumps even if it's not really used, but the code
simplification should justify the cost.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20240207155140.18238-22-tiwai@suse.deSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/es1938.c

@@ -216,9 +216,7 @@ struct es1938 {
 #ifdef SUPPORT_JOYSTICK
 	struct gameport *gameport;
 #endif
-#ifdef CONFIG_PM_SLEEP
 	unsigned char saved_regs[SAVED_REG_SIZE];
-#endif
 };
 
 static irqreturn_t snd_es1938_interrupt(int irq, void *dev_id);
@@ -1395,7 +1393,6 @@ static void snd_es1938_chip_init(struct es1938 *chip)
 	outb(0, SLDM_REG(chip, DMACLEAR));
 }
 
-#ifdef CONFIG_PM_SLEEP
 /*
  * PM support
  */
@@ -1461,11 +1458,7 @@ static int es1938_resume(struct device *dev)
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(es1938_pm, es1938_suspend, es1938_resume);
-#define ES1938_PM_OPS	&es1938_pm
-#else
-#define ES1938_PM_OPS	NULL
-#endif /* CONFIG_PM_SLEEP */
+static DEFINE_SIMPLE_DEV_PM_OPS(es1938_pm, es1938_suspend, es1938_resume);
 
 #ifdef SUPPORT_JOYSTICK
 static int snd_es1938_create_gameport(struct es1938 *chip)
@@ -1787,7 +1780,7 @@ static struct pci_driver es1938_driver = {
 	.id_table = snd_es1938_ids,
 	.probe = snd_es1938_probe,
 	.driver = {
-		.pm = ES1938_PM_OPS,
+		.pm = &es1938_pm,
 	},
 };