perf tests attr: Fix cpu test disabled term setup

The stat command creates all events disabled and enables them either
manualy or via the enable_on_exec bit.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Richter <tmricht@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/20170703145030.12903-11-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/tests/attr/test-stat-C0

@@ -4,6 +4,6 @@ args    = -e cycles -C 0 kill >/dev/null 2>&1
 ret     = 1
 
 [event:base-stat]
-# events are enabled by default when attached to cpu
-disabled=0
+# events are disabled by default when attached to cpu
+disabled=1
 enable_on_exec=0