ALSA: lola: Support PCM sync_stop

The driver invokes snd_pcm_period_elapsed() simply from the interrupt
handler.  Set card->sync_irq for enabling the missing sync_stop PCM
operation, as well as removing the superfluous synchronize_irq()
call.

Link: https://lore.kernel.org/r/20191210063454.31603-27-tiwai@suse.deSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/lola/lola.c

@@ -638,7 +638,7 @@ static int lola_create(struct snd_card *card, struct pci_dev *pci,
 		goto errout;
 	}
 	chip->irq = pci->irq;
-	synchronize_irq(chip->irq);
+	card->sync_irq = chip->irq;
 
 	dever = lola_readl(chip, BAR1, DEVER);
 	chip->pcm[CAPT].num_streams = (dever >> 0) & 0x3ff;