Similar to the previous commit, the net_helper.sh file from the parent
directory is used by the MPTCP selftests and it needs to be present when
running the tests.

This file then needs to be listed in the Makefile to be included when
exporting or installing the tests, e.g. with:

  make -C tools/testing/selftests \
          TARGETS=net/mptcp \
          install INSTALL_PATH=$KSFT_INSTALL_PATH

  cd $KSFT_INSTALL_PATH
  ./run_kselftest.sh -c net/mptcp

Fixes: 1af3bc912eac ("selftests: mptcp: lib: use wait_local_port_listen helper")
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
---
 tools/testing/selftests/net/mptcp/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/net/mptcp/Makefile b/tools/testing/selftests/net/mptcp/Makefile
index 68924053a1e6..5d796622e730 100644
--- a/tools/testing/selftests/net/mptcp/Makefile
+++ b/tools/testing/selftests/net/mptcp/Makefile
@@ -11,7 +11,7 @@ TEST_GEN_FILES = mptcp_connect pm_nl_ctl mptcp_sockopt mptcp_inq
 
 TEST_FILES := mptcp_lib.sh settings
 
-TEST_INCLUDES := ../lib.sh
+TEST_INCLUDES := ../lib.sh ../net_helper.sh
 
 EXTRA_CLEAN := *.pcap
 

-- 
2.45.2