cris/PCI: factor out pcibios_setup()

The PCI core provides a generic pcibios_setup() routine.  Drop this
architecture-specific version in favor of that.

This patch fixes what looks like a bug in cris, which implements
pcibios_setup() such that pci_setup() doesn't look for any generic
options.
Signed-off-by: NMyron Stowe <myron.stowe@redhat.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

arch/cris/arch-v32/drivers/pci/bios.c

@@ -6,11 +6,6 @@ void __devinit  pcibios_fixup_bus(struct pci_bus *b)
 {
 }
 
-char * __devinit  pcibios_setup(char *str)
-{
-	return NULL;
-}
-
 void pcibios_set_master(struct pci_dev *dev)
 {
 	u8 lat;