sparc/PCI: Use PCI_UNKNOWN for unknown power state

Previously we initialized dev->current_state to 4 (PCI_D3cold), but I think
we wanted PCI_UNKNOWN (5) here based on the comment and the fact that the
generic version of this code, pci_setup_device(), uses PCI_UNKNOWN.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: David S. Miller <davem@davemloft.net>

arch/sparc/kernel/pci.c

@@ -327,7 +327,7 @@ static struct pci_dev *of_create_pci_dev(struct pci_pbm_info *pbm,
 	if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE)
 		pci_set_master(dev);
 
-	dev->current_state = 4;		/* unknown power state */
+	dev->current_state = PCI_UNKNOWN;	/* unknown power state */
 	dev->error_state = pci_channel_io_normal;
 	dev->dma_mask = 0xffffffff;