PCI: Use "unsigned long" for __pci_enable_device_flags to match ioport.h

__pci_enable_device_flags() takes values like IORESOURCE_IO and
IORESOURCE_MEM, which are values for struct resource.flags, which is
"unsigned long", not "resource_size_t".
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

drivers/pci/pci.c

@@ -1157,7 +1157,7 @@ int pci_reenable_device(struct pci_dev *dev)
 }
 
 static int __pci_enable_device_flags(struct pci_dev *dev,
-				     resource_size_t flags)
+				     unsigned long flags)
 {
 	int err;
 	int i, bars = 0;