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.

(cherry-pick of cbcf2778c39e9da2e29ebdf1038b6116a76ff22e)

Bug: 22207911
Change-Id: I3549338a2161fa29675993c239f57809270797f8
diff --git a/init/perfboot.py b/init/perfboot.py
index 82f7e67..8f2096a 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',
 ]