[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>

sound/pci/korg1212/korg1212.c

@@ -2233,7 +2233,7 @@ static int __devinit snd_korg1212_create(struct snd_card *card, struct pci_dev *
         }
 
         err = request_irq(pci->irq, snd_korg1212_interrupt,
-                          IRQF_DISABLED|IRQF_SHARED,
+                          IRQF_SHARED,
                           "korg1212", korg1212);
 
         if (err) {