[ALSA] dev_class=SNDRV_PCM_CLASS_MODEM for modem PCMs

dev_class=SNDRV_PCM_CLASS_MODEM for all supported softmodem PCMs

Signed-off-by: Sasha Khapyorsky <sashak@smlink.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/intel8x0m.c b/sound/pci/intel8x0m.c
index 9e2060d..2ac1fec 100644
--- a/sound/pci/intel8x0m.c
+++ b/sound/pci/intel8x0m.c
@@ -746,6 +746,7 @@
 
 	pcm->private_data = chip;
 	pcm->info_flags = 0;
+	pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
 	if (rec->suffix)
 		sprintf(pcm->name, "%s - %s", chip->card->shortname, rec->suffix);
 	else