[PATCH 3/8] selftests: futex: override clean in lib.mk to fix warnings

[Shuah Khan <shuahkh@xxxxxxxxxxxxxxx>]

Add override for lib.mk clean to fix the following warnings from clean
target run.

Makefile:36: warning: overriding recipe for target 'clean'
../lib.mk:55: warning: ignoring old recipe for target 'clean'

Signed-off-by: Shuah Khan <shuahkh@xxxxxxxxxxxxxxx>
---
 tools/testing/selftests/futex/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/futex/Makefile b/tools/testing/selftests/futex/Makefile
index c8095e6..e2fbb89 100644
--- a/tools/testing/selftests/futex/Makefile
+++ b/tools/testing/selftests/futex/Makefile
@@ -32,9 +32,10 @@ override define EMIT_TESTS
 	echo "./run.sh"
 endef
 
-clean:
+override define CLEAN
 	for DIR in $(SUBDIRS); do		\
 		BUILD_TARGET=$(OUTPUT)/$$DIR;	\
 		mkdir $$BUILD_TARGET  -p;	\
 		make OUTPUT=$$BUILD_TARGET -C $$DIR $@;\
 	done
+endef
-- 
2.9.3

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