Revert "[POWERPC] Rename get_property to of_get_property: drivers"

This reverts commit d05c7a80cf39ae7d0f8d0c3e47c93d51fcd393d3,
which included changes which should go via other subsystem
maintainers.
diff --git a/drivers/net/sungem.c b/drivers/net/sungem.c
index 6b1cd74..08ea61d 100644
--- a/drivers/net/sungem.c
+++ b/drivers/net/sungem.c
@@ -2929,7 +2929,7 @@
 #elif defined(CONFIG_PPC_PMAC)
 	const unsigned char *addr;
 
-	addr = of_get_property(gp->of_node, "local-mac-address", NULL);
+	addr = get_property(gp->of_node, "local-mac-address", NULL);
 	if (addr == NULL) {
 		printk("\n");
 		printk(KERN_ERR "%s: can't get mac-address\n", dev->name);