[PATCH v2 2/4] selftests/arm64: Define top_srcdir for the fp tests

[Mark Brown]

Some of the rules in lib.mk use a top_srcdir variable to figure out where
the top of the kselftest tree is, provide it.

Signed-off-by: Mark Brown <broonie at kernel.org>
---
 tools/testing/selftests/arm64/fp/Makefile | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/arm64/fp/Makefile b/tools/testing/selftests/arm64/fp/Makefile
index 774c38cee317..41b420050765 100644
--- a/tools/testing/selftests/arm64/fp/Makefile
+++ b/tools/testing/selftests/arm64/fp/Makefile
@@ -1,6 +1,10 @@
 # SPDX-License-Identifier: GPL-2.0
 
-CFLAGS += -I../../../../../usr/include/
+# A proper top_srcdir is needed by KSFT(lib.mk)
+top_srcdir = $(realpath ../../../../../)
+
+CFLAGS += -I$(top_srcdir)/usr/include/
+
 TEST_GEN_PROGS := sve-ptrace sve-probe-vls vec-syscfg
 TEST_GEN_PROGS_EXTENDED := fp-pidbench fpsimd-test \
 	rdvl-sve \
-- 
2.30.2