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/compat/27.0/27.0.ignore.cil b/private/compat/27.0/27.0.ignore.cil
index 9fda88e..427f4d4 100644
--- a/private/compat/27.0/27.0.ignore.cil
+++ b/private/compat/27.0/27.0.ignore.cil
@@ -28,6 +28,7 @@
     blank_screen_exec
     blank_screen_tmpfs
     boot_status_prop
+    bootanim_system_prop
     bootloader_boot_reason_prop
     bootloader_prop
     bluetooth_a2dp_offload_prop
diff --git a/private/compat/30.0/30.0.cil b/private/compat/30.0/30.0.cil
index c7a84ff..ac3d463 100644
--- a/private/compat/30.0/30.0.cil
+++ b/private/compat/30.0/30.0.cil
@@ -1433,6 +1433,8 @@
 (typeattributeset exported_radio_prop_30_0 (exported_radio_prop telephony_status_prop))
 (typeattributeset exported_secure_prop_30_0 (exported_secure_prop))
 (typeattributeset exported_system_prop_30_0 (exported_system_prop charger_status_prop))
+(typeattributeset exported_system_prop_30_0 (exported_system_prop bootanim_system_prop))
+
 (typeattributeset exported_system_radio_prop_30_0
   ( exported_system_radio_prop
     usb_config_prop