atrace: Add cpuhp trace points

Bug: 162568440
Test: take systrace
Change-Id: I67f58bd0374e50c3d8aec5dc8f2391d174920c4f
diff --git a/cmds/atrace/atrace.cpp b/cmds/atrace/atrace.cpp
index fc3572c..08f44c8 100644
--- a/cmds/atrace/atrace.cpp
+++ b/cmds/atrace/atrace.cpp
@@ -172,6 +172,8 @@
         { OPT,      "events/clk/clk_enable/enable" },
         { OPT,      "events/power/cpu_frequency_limits/enable" },
         { OPT,      "events/power/suspend_resume/enable" },
+        { OPT,      "events/cpuhp/cpuhp_enter/enable" },
+        { OPT,      "events/cpuhp/cpuhp_exit/enable" },
     } },
     { "membus",     "Memory Bus Utilization", 0, {
         { REQ,      "events/memory_bus/enable" },