vppinfra: move clib_count_equal_* code

Type: refactor
Change-Id: Ib9e8abdbf745ad6563fc79c9ebb6b2ea65917d08
Signed-off-by: Damjan Marion <damarion@cisco.com>
diff --git a/src/vnet/l2/l2_output.c b/src/vnet/l2/l2_output.c
index ba40de3..74ca868 100644
--- a/src/vnet/l2/l2_output.c
+++ b/src/vnet/l2/l2_output.c
@@ -22,6 +22,7 @@
 
 #include <vppinfra/error.h>
 #include <vppinfra/hash.h>
+#include <vppinfra/vector/count_equal.h>
 #include <vnet/l2/feat_bitmap.h>
 #include <vnet/l2/l2_output.h>