init.angler.rc: enable low power mode only on boot complete

Change-Id: I8cf9e5843eb03fdf544f299d797694e53d725e29
diff --git a/init.angler.rc b/init.angler.rc
index 1150f6b..d5d305a 100755
--- a/init.angler.rc
+++ b/init.angler.rc
@@ -184,6 +184,10 @@
    write /sys/devices/system/cpu/cpu6/online 0
    write /sys/devices/system/cpu/cpu7/online 0
 
+on property:sys.boot_completed=1
+     #allow CPUs to go in deeper idle state than C0
+     write /sys/module/lpm_levels/parameters/sleep_disabled 0
+
 service ssr_setup /system/bin/ssr_setup
     oneshot
     disabled