fib feature: Code mechanics to decouple dependency of feature on adj

Type: refactor

Signed-off-by: Neale Ranns <nranns@cisco.com>
Change-Id: I1d8b88fe1eefc850865297b4f025b97e6373a6bd
diff --git a/src/vnet/adj/adj.c b/src/vnet/adj/adj.c
index 0966d97..a603925 100644
--- a/src/vnet/adj/adj.c
+++ b/src/vnet/adj/adj.c
@@ -405,10 +405,11 @@
     return (ADJ_WALK_RC_CONTINUE);
 }
 
-void
+static void
 adj_feature_update (u32 sw_if_index,
                     u8 arc_index,
-                    u8 is_enable)
+                    u8 is_enable,
+                    void *data)
 {
     /*
      * Walk all the adjacencies on the interface to update the cached
@@ -590,6 +591,8 @@
     adj_midchain_module_init();
     adj_mcast_module_init();
 
+    vnet_feature_register(adj_feature_update, NULL);
+
     return (NULL);
 }