OMAP4 Mailbox Patch to change the IRQ flag from IRQF_DISABLED to IRQF_SHARED

This is a temporary patch and needs to be reviewed.
Currently, this facilitates both the tesla and ducati
sides to request for the same irq through a
omap_mbox_get() call.
Signed-off-by: C A Subramaniam <subramaniam.ca@ti.com>

arch/arm/plat-omap/mailbox.c

@@ -273,7 +273,7 @@ static int omap_mbox_startup(struct omap_mbox *mbox)
 			return ret;
 	}
 
-	ret = request_irq(mbox->irq, mbox_interrupt, IRQF_DISABLED,
+	ret = request_irq(mbox->irq, mbox_interrupt, IRQF_SHARED,
 				mbox->name, mbox);
 	if (unlikely(ret)) {
 		printk(KERN_ERR