[POWERPC] cell: fix interrupt priority handling

Checking the priority field to test for irq validity is
completely bogus and breaks with future external interrupt
controllers.

Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/platforms/cell/interrupt.c

@@ -117,8 +117,7 @@ static int iic_external_get_irq(struct cbe_iic_pending_bits pending)
 		 * One of these units can be connected
 		 * to an external interrupt controller.
 		 */
-		if (pending.prio > 0x3f ||
-		    pending.class != 2)
+		if (pending.class != 2)
 			break;
 		irq = IIC_EXT_OFFSET
 			+ spider_get_irq(node)