[ALSA] Remove IRQF_DISABLED for shared PCI irqs

Fix IRQ flags for PCI devices.
The shared IRQs for PCI devices shouldn't be allocated with
IRQF_DISABLED.  Also, when MSI is enabled, IRQF_SHARED shouldn't
be used.
The patch removes unnecessary cast in request_irq and free_irq,
too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c
index 9c1bce7..30aaa60 100644
--- a/sound/pci/intel8x0.c
+++ b/sound/pci/intel8x0.c
@@ -2509,7 +2509,7 @@
 	}
 	pci_set_master(pci);
 	if (request_irq(pci->irq, snd_intel8x0_interrupt,
-			IRQF_DISABLED|IRQF_SHARED, card->shortname, chip)) {
+			IRQF_SHARED, card->shortname, chip)) {
 		printk(KERN_ERR "intel8x0: unable to grab IRQ %d, "
 		       "disabling device\n", pci->irq);
 		snd_card_disconnect(card);
@@ -2887,7 +2887,7 @@
 
 	/* request irq after initializaing int_sta_mask, etc */
 	if (request_irq(pci->irq, snd_intel8x0_interrupt,
-			IRQF_DISABLED|IRQF_SHARED, card->shortname, chip)) {
+			IRQF_SHARED, card->shortname, chip)) {
 		snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
 		snd_intel8x0_free(chip);
 		return -EBUSY;