Add arping to debug builds.

Bug: 30719348
Change-Id: Ic9249bd4043aa5bc5e309f164d55cc8ebc66ddea
diff --git a/Android.mk b/Android.mk
index 5f5d72b..5e32066 100644
--- a/Android.mk
+++ b/Android.mk
@@ -38,3 +38,10 @@
 LOCAL_MODULE_TAGS := debug
 LOCAL_SRC_FILES := traceroute6.c
 include $(BUILD_EXECUTABLE)
+
+include $(CLEAR_VARS)
+LOCAL_CFLAGS := $(iputils_cflags)
+LOCAL_MODULE := arping
+LOCAL_MODULE_TAGS := debug
+LOCAL_SRC_FILES := arping.c
+include $(BUILD_EXECUTABLE)