sound: irq: Remove IRQF_DISABLED

Since commit [e58aa3d2: genirq: Run irq handlers with interrupts disabled],
We run all interrupt handlers with interrupts disabled
and we even check and yell when an interrupt handler
returns with interrupts enabled (see commit [b738a50a:
genirq: Warn when handler enables interrupts]).

So now this flag is a NOOP and can be removed.

Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/isa/ad1816a/ad1816a_lib.c

@@ -595,7 +595,7 @@ int __devinit snd_ad1816a_create(struct snd_card *card,
 		snd_ad1816a_free(chip);
 		return -EBUSY;
 	}
-	if (request_irq(irq, snd_ad1816a_interrupt, IRQF_DISABLED, "AD1816A", (void *) chip)) {
+	if (request_irq(irq, snd_ad1816a_interrupt, 0, "AD1816A", (void *) chip)) {
 		snd_printk(KERN_ERR "ad1816a: can't grab IRQ %d\n", irq);
 		snd_ad1816a_free(chip);
 		return -EBUSY;