[SPARC]: Provide pci_device_to_OF_node() just like powerpc.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/asm-sparc/pci.h b/include/asm-sparc/pci.h
index 3864474..a750c688 100644
--- a/include/asm-sparc/pci.h
+++ b/include/asm-sparc/pci.h
@@ -165,6 +165,9 @@
         return (dma_addr == PCI_DMA_ERROR_CODE);
 }
 
+struct device_node;
+extern struct device_node *pci_device_to_OF_node(struct pci_dev *pdev);
+
 #endif /* __KERNEL__ */
 
 /* generic pci stuff */