Allow boot animation to update boot status.

This CL was missed from the topic:
https://android-review.googlesource.com/q/topic:bootanim-percent

Test: update ART module, see animation go to 100%
Bug: 184881321
Change-Id: I59706718af11751a7e1f4b5ab1ff2793f554fb19
diff --git a/private/property_contexts b/private/property_contexts
index 70f8b9c..8aecb6ad 100644
--- a/private/property_contexts
+++ b/private/property_contexts
@@ -869,8 +869,8 @@
 
 ro.vendor.redirect_socket_calls u:object_r:vendor_socket_hook_prop:s0 exact bool
 
-service.bootanim.exit u:object_r:exported_system_prop:s0 exact int
-service.bootanim.progress u:object_r:exported_system_prop:s0 exact int
+service.bootanim.exit u:object_r:bootanim_system_prop:s0 exact int
+service.bootanim.progress u:object_r:bootanim_system_prop:s0 exact int
 
 sys.init.userspace_reboot.in_progress u:object_r:userspace_reboot_exported_prop:s0 exact bool
 sys.use_memfd                         u:object_r:use_memfd_prop:s0 exact bool
@@ -1168,4 +1168,4 @@
 persist.rollback.is_test u:object_r:rollback_test_prop:s0 exact bool
 
 # bootanimation properties
-ro.bootanim.quiescent.enabled u:object_r:bootanim_config_prop:s0 exact bool
\ No newline at end of file
+ro.bootanim.quiescent.enabled u:object_r:bootanim_config_prop:s0 exact bool