ieee1394: fix calculation of sysfs attribute "address"

struct csr1212_keyval.offset is relative to 0xffff f000 0000 rather than
0xffff f000 0400.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

drivers/ieee1394/nodemgr.c

@@ -976,7 +976,7 @@ static struct unit_directory *nodemgr_process_unit_directory
 
 	ud->ne = ne;
 	ud->ignore_driver = ignore_drivers;
-	ud->address = ud_kv->offset + CSR1212_CONFIG_ROM_SPACE_BASE;
+	ud->address = ud_kv->offset + CSR1212_REGISTER_SPACE_BASE;
 	ud->ud_kv = ud_kv;
 	ud->id = (*id)++;