atrace: Add sched_process_free trace event

sched/sched_process_free trace event was missing from atrace - an
oversight caught in the process of removing other permission bits from
tracefs.

Bug: 208892266
Bug: 209513178
Test: Manual
Change-Id: Ib208130671e943e409331d51efb8765cc59f0b4a
diff --git a/cmds/atrace/atrace.rc b/cmds/atrace/atrace.rc
index 8da1352..61175b9 100644
--- a/cmds/atrace/atrace.rc
+++ b/cmds/atrace/atrace.rc
@@ -315,6 +315,8 @@
     chmod 0666 /sys/kernel/tracing/events/sched/sched_pi_setprio/enable
     chmod 0666 /sys/kernel/debug/tracing/events/sched/sched_process_exit/enable
     chmod 0666 /sys/kernel/tracing/events/sched/sched_process_exit/enable
+    chmod 0666 /sys/kernel/debug/tracing/events/sched/sched_process_free/enable
+    chmod 0666 /sys/kernel/tracing/events/sched/sched_process_free/enable
     chmod 0666 /sys/kernel/debug/tracing/events/sched/sched_waking/enable
     chmod 0666 /sys/kernel/tracing/events/sched/sched_waking/enable
     chmod 0666 /sys/kernel/debug/tracing/events/sched/sched_wakeup_new/enable