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/mips/au1x00.c b/sound/mips/au1x00.c
index 446cf97..7567ebd 100644
--- a/sound/mips/au1x00.c
+++ b/sound/mips/au1x00.c
@@ -465,13 +465,13 @@
 
 	flags = claim_dma_lock();
 	if ((au1000->stream[PLAYBACK]->dma = request_au1000_dma(DMA_ID_AC97C_TX,
-			"AC97 TX", au1000_dma_interrupt, IRQF_DISABLED,
+			"AC97 TX", au1000_dma_interrupt, 0,
 			au1000->stream[PLAYBACK])) < 0) {
 		release_dma_lock(flags);
 		return -EBUSY;
 	}
 	if ((au1000->stream[CAPTURE]->dma = request_au1000_dma(DMA_ID_AC97C_RX,
-			"AC97 RX", au1000_dma_interrupt, IRQF_DISABLED,
+			"AC97 RX", au1000_dma_interrupt, 0,
 			au1000->stream[CAPTURE])) < 0){
 		release_dma_lock(flags);
 		return -EBUSY;