ALSA: ice1724: enable suspend on unknown ICE1724 cards

Assume that unknown ICE1724-based cards are AC97-only that can suspend
without any additional card-specific code.

This fixes suspend on Gainward Hollywood@Home 7.1.
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/ice1712/ice1724.c

@@ -2362,6 +2362,8 @@ static int __devinit snd_vt1724_read_eeprom(struct snd_ice1712 *ice,
 	}
 	printk(KERN_WARNING "ice1724: No matching model found for ID 0x%x\n",
 	       ice->eeprom.subvendor);
+	/* assume AC97-only card which can suspend without additional code */
+	ice->pm_suspend_enabled = 1;
 
  found:
 	ice->eeprom.size = snd_vt1724_read_i2c(ice, dev, 0x04);