[PATCH] PCI: transparent bridge detection fix

The detection of subtractive decoding bridges is broken: `class' variable
doesn't contain ProgIf byte at this point, I should check `dev->class'
instead.

This fixes resource allocation problems on certain docking stations.

drivers/pci/probe.c

@@ -384,7 +384,7 @@ int pci_setup_device(struct pci_dev * dev)
 		/* The PCI-to-PCI bridge spec requires that subtractive
 		   decoding (i.e. transparent) bridge must have programming
 		   interface code of 0x01. */ 
-		dev->transparent = ((class & 0xff) == 1);
+		dev->transparent = ((dev->class & 0xff) == 1);
 		pci_read_bases(dev, 2, PCI_ROM_ADDRESS1);
 		break;