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/soc/samsung/ac97.c b/sound/soc/samsung/ac97.c
index f97110e..884c8a1 100644
--- a/sound/soc/samsung/ac97.c
+++ b/sound/soc/samsung/ac97.c
@@ -444,7 +444,7 @@
 	}
 
 	ret = request_irq(irq_res->start, s3c_ac97_irq,
-					IRQF_DISABLED, "AC97", NULL);
+					0, "AC97", NULL);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "ac97: interrupt request failed.\n");
 		goto err4;