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

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c
index 207f1b6..3fa5f95 100644
--- a/arch/sparc/kernel/pcic.c
+++ b/arch/sparc/kernel/pcic.c
@@ -944,6 +944,14 @@
 	return -ENXIO;
 }
 
+struct device_node *pci_device_to_OF_node(struct pci_dev *pdev)
+{
+	struct pcidev_cookie *pc = pdev->sysdata;
+
+	return pc->prom_node;
+}
+EXPORT_SYMBOL(pci_device_to_OF_node);
+
 /*
  * This probably belongs here rather than ioport.c because
  * we do not want this crud linked into SBus kernels.