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>
diff --git a/sound/isa/es18xx.c b/sound/isa/es18xx.c
index aeee8f8..bf6ad0b 100644
--- a/sound/isa/es18xx.c
+++ b/sound/isa/es18xx.c
@@ -1805,7 +1805,7 @@
 		return -EBUSY;
 	}
 
-	if (request_irq(irq, snd_es18xx_interrupt, IRQF_DISABLED, "ES18xx",
+	if (request_irq(irq, snd_es18xx_interrupt, 0, "ES18xx",
 			(void *) card)) {
 		snd_es18xx_free(card);
 		snd_printk(KERN_ERR PFX "unable to grap IRQ %d\n", irq);