vppinfra: fix vppinfra test code build

Type: fix
Signed-off-by: Dave Barach <dave@barachs.net>
Change-Id: I921adae4ad797bf80cfcdb05d2a89ace9183a89a
diff --git a/src/vppinfra/CMakeLists.txt b/src/vppinfra/CMakeLists.txt
index 3128ad3..fd79aa5 100644
--- a/src/vppinfra/CMakeLists.txt
+++ b/src/vppinfra/CMakeLists.txt
@@ -75,6 +75,7 @@
   time.c
   time_range.c
   timing_wheel.c
+  tw_timer_2t_2w_512sl.c
   tw_timer_16t_1w_2048sl.c
   tw_timer_16t_2w_512sl.c
   tw_timer_1t_3w_1024sl_ov.c
@@ -165,7 +166,6 @@
   time.h
   time_range.h
   timing_wheel.h
-  tw_timer_2t_2w_512sl.c
   tw_timer_16t_1w_2048sl.h
   tw_timer_16t_2w_512sl.h
   tw_timer_1t_3w_1024sl_ov.h