piix_pci: fix piix3_set_irq_pic()

If pic_irq is greater than 7, the irq level is always 0 on 32bits.
Signed-off-by: NTeLeMan <geleman@gmail.com>
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>

hw/piix_pci.c

@@ -312,7 +312,7 @@ static void piix3_set_irq_pic(PIIX3State *piix3, int pic_irq)
 {
     qemu_set_irq(piix3->pic[pic_irq],
                  !!(piix3->pic_levels &
-                    (((1UL << PIIX_NUM_PIRQS) - 1) <<
+                    (((1ULL << PIIX_NUM_PIRQS) - 1) <<
                      (pic_irq * PIIX_NUM_PIRQS))));
 }