FIB path weight incorrect in dump (VPP-922)

Change-Id: I655f41878ca3595681d0255782b0faba01c9824b
Signed-off-by: Neale Ranns <nranns@cisco.com>
diff --git a/src/vnet/mpls/mpls.api b/src/vnet/mpls/mpls.api
index 61d7fe6..67f1045 100644
--- a/src/vnet/mpls/mpls.api
+++ b/src/vnet/mpls/mpls.api
@@ -112,7 +112,8 @@
 typeonly manual_print manual_endian define fib_path2
 {
   u32 sw_if_index;
-  u32 weight;
+  u8 weight;
+  u8 preference;
   u8 is_local;
   u8 is_drop;
   u8 is_unreach;