mpc86xx: Add support to populate addr map based on BATs

If CONFIG_ADDR_MAP is enabled, update the address map
whenever we write a bat.

Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
diff --git a/lib_ppc/board.c b/lib_ppc/board.c
index df1cf13..2262bb4 100644
--- a/lib_ppc/board.c
+++ b/lib_ppc/board.c
@@ -685,7 +685,7 @@
 	 */
 	trap_init (dest_addr);
 
-#if defined(CONFIG_ADDR_MAP) && defined(CONFIG_E500)
+#ifdef CONFIG_ADDR_MAP
 	init_addr_map();
 #endif