update_engine: Enable perf mode in update_engine.rc

based on https://github.com/omnirom/android_system_update_engine/commit/d9a9e669bf284263cc41b68b0e74b56d1813a69d

Change-Id: I3a154be6dad630e94b6321bf69bd7c65fdd5c5c7
diff --git a/update_engine.rc b/update_engine.rc
index 45f05af..4f497a7 100644
--- a/update_engine.rc
+++ b/update_engine.rc
@@ -3,7 +3,7 @@
     class late_start
     user root
     group root system wakelock inet cache media_rw
-    task_profiles OtaProfiles
+    task_profiles ProcessCapacityMax HighIoPriority MaxPerformance
     disabled
 
 on property:ro.boot.slot_suffix=*