perfboot.py: check 2 more event logs by default

'sf_stop_bootanim' is useful for tracking the time wasted by
showing the 'outro' part of the boot animation.

'wm_boot_animation_done' is also useful for tracking user
perceived boot time.

Bug: 22207911
Change-Id: I0481f93d08f49c0de07c46550d0a113074f30765
diff --git a/init/perfboot.py b/init/perfboot.py
index 2cd4699..def8da0 100755
--- a/init/perfboot.py
+++ b/init/perfboot.py
@@ -66,6 +66,8 @@
     'boot_progress_pms_ready',
     'boot_progress_ams_ready',
     'boot_progress_enable_screen',
+    'sf_stop_bootanim',
+    'wm_boot_animation_done',
 ]