[POWERPC] Add missing EXPORTS for mpc52xx support

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/kernel/of_device.c b/arch/powerpc/kernel/of_device.c
index 5c65398..8a06724 100644
--- a/arch/powerpc/kernel/of_device.c
+++ b/arch/powerpc/kernel/of_device.c
@@ -122,6 +122,7 @@
 }
 
 
+EXPORT_SYMBOL(of_match_node);
 EXPORT_SYMBOL(of_match_device);
 EXPORT_SYMBOL(of_device_register);
 EXPORT_SYMBOL(of_device_unregister);