[MIPS] SN: Declare bridge_pci_ops.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

include/asm-mips/pci/bridge.h

@@ -848,4 +848,6 @@ struct bridge_controller {
 extern void register_bridge_irq(unsigned int irq);
 extern int request_bridge_irq(struct bridge_controller *bc);
 
+extern struct pci_ops bridge_pci_ops;
+
 #endif /* _ASM_PCI_BRIDGE_H */