kcmp selftests: print fail status instead of cause make error

In case kcmp_test exit non zero value it will cause make error.
Better way is just print the test failure status.
Signed-off-by: NDave Young <dyoung@redhat.com>
Reviewed-by: NPekka Enberg <penberg@kernel.org>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

tools/testing/selftests/kcmp/Makefile

@@ -22,7 +22,7 @@ else
 endif
 
 run_tests: all
-	./kcmp_test
+	@./kcmp_test || echo "kcmp_test: [FAIL]"
 
 clean:
 	rm -fr ./run_test