init: Add new props triggers

Both Omni and CM split props loading into load_system_props_action and
load_persist_props_actions in Android 6.0 instead of all_props action.
Add these triggers. Unrecognized triggers do not cause failures in init
for versions of Android which do not have these.

Change-Id: I9682690ff7d378dc0d5e1598754f7a29600c1c2d

etc/init.rc

@@ -51,12 +51,20 @@ on boot
 
     class_start default
 
-# Load properties from /system/ + /factory after fs mount.
+# Load properties, pre-Android 6.0
 on load_all_props_action
     load_all_props
 
+# Load properties, Android 6.0+
+on load_system_props_action
+    load_system_props
+
+# Load properties, Android 6.0+, vendor init lives here
+on load_persist_props_action
+    load_persist_props
+
 on firmware_mounts_complete
-   rm /dev/.booting
+    rm /dev/.booting
 
 # Mount filesystems and start core system services.
 on late-init
@@ -65,11 +73,15 @@ on late-init
     trigger post-fs
     trigger post-fs-data
 
-    # Load properties from /system/ + /factory after fs mount. Place
-    # this in another action so that the load will be scheduled after the prior
-    # issued fs triggers have completed.
+    # Load properties, pre-Android 6.0
     trigger load_all_props_action
 
+    # Load properties, Android 6.0+
+    trigger load_system_props_action
+
+    # Load properties, Android 6.0+, vendor init lives here
+    trigger load_persist_props_action
+
     # Remove a file to wake up anything waiting for firmware
     trigger firmware_mounts_complete