add more boot animation events

- add rendering start and surface flinger wait completion point.

bug: 38450031
Test: ython packages/services/Car/tools/bootanalyze/bootanalyze.py -r -c packages/services/Car/tools/bootanalyze/config.yaml -n 20 -f -e 14.8 -w 30 -v
Change-Id: I06c9b378af8eeff21339a5846e5c4a08a6421501
diff --git a/tools/bootanalyze/config.yaml b/tools/bootanalyze/config.yaml
index 923ca5d..9d322ed 100644
--- a/tools/bootanalyze/config.yaml
+++ b/tools/bootanalyze/config.yaml
@@ -43,6 +43,8 @@
   CarLauncherReady: Em.Overview:\s*onResume
   CarService_start: for service com.android.car/.CarService
   BootAnimStart: starting service 'bootanim'
+  BootAnimSfWait: BootAnimation:\sWaiting\sfor\sSurfaceFlinger\stook\s
+  BootAnimShowStart: BootAnimation:\sBootAnimationShownTiming\sstart\stime
   BootAnimStopRequest: TELLING SURFACE FLINGER WE ARE BOOTED
   BootAnimEnd: Service 'bootanim'
   KeyguardStart: KeyguardServiceDelegate.*\*\*\* Keyguard started