tests: add buildtest for nhdp

tests/nhdp/Makefile

+APPLICATION = nhdp
+include ../Makefile.tests_common
+
+BOARD_BLACKLIST := arduino-mega2560 msb-430 msb-430h telosb wsn430-v1_3b wsn430-v1_4 z1
+BOARD_INSUFFICIENT_MEMORY := nucleo-f334 stm32f0discovery weio
+
+USEMODULE += gnrc_ipv6
+USEMODULE += gnrc_conn_udp
+USEMODULE += nhdp
+
+include $(RIOTBASE)/Makefile.include

tests/nhdp/main.c

+/*
+ * Copyright (C) 2015 Cenk Gündoğan <cnkgndgn@gmail.com>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @file
+ * @brief       Check if the nhdp module builds.
+ *
+ * @author      Cenk Gündoğan <cnkgndgn@gmail.com>
+ *
+ */
+
+#include <stdio.h>
+
+int main(void)
+{
+    printf("NHDP compiled!");
+    return 0;
+}