[ALSA] nm256 - Add mention of opl3sa2 to a diagnostic message

Adds mention of opl3sa2 driver to a diagnostic message for NeoMagic
nm256 driver.

Signed-off-by: Paul Vojta <vojta@math.berkeley.edu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

sound/pci/nm256/nm256.c

@@ -1533,7 +1533,8 @@ snd_nm256_create(struct snd_card *card, struct pci_dev *pci,
 				printk(KERN_ERR "  force the driver to load by "
 				       "passing in the module parameter\n");
 				printk(KERN_ERR "    force_ac97=1\n");
-				printk(KERN_ERR "  or try sb16 or cs423x drivers instead.\n");
+				printk(KERN_ERR "  or try sb16, opl3sa2, or "
+				       "cs423x drivers instead.\n");
 				err = -ENXIO;
 				goto __error;
 			}