ALSA: es1688: Fix -Wformat-truncation warning

The filling of card->longname can be gracefully truncated, as it's
only informative.  Use scnprintf() and suppress the superfluous
compile warning with -Wformat-truncation.

Link: https://lore.kernel.org/r/20230915082802.28684-8-tiwai@suse.deSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/isa/es1688/es1688.c

@@ -130,7 +130,7 @@ static int snd_es1688_probe(struct snd_card *card, unsigned int n)
 
 	strscpy(card->driver, "ES1688", sizeof(card->driver));
 	strscpy(card->shortname, chip->pcm->name, sizeof(card->shortname));
-	snprintf(card->longname, sizeof(card->longname),
+	scnprintf(card->longname, sizeof(card->longname),
 		  "%s at 0x%lx, irq %i, dma %i", chip->pcm->name, chip->port,
 		  chip->irq, chip->dma8);