Load persistent properties after mounting an encrypted /data partition.

Fix for bug 3415286.  Trigger an action in init.rc to load the persistent
properties after /data has been decrypted and mounted.

Change-Id: I5fe3b481bcc6963113e830728c204b22ffc3b722
diff --git a/cryptfs.c b/cryptfs.c
index 3c6deb1..68d2787 100644
--- a/cryptfs.c
+++ b/cryptfs.c
@@ -634,6 +634,7 @@
             /* If that succeeded, then mount the decrypted filesystem */
             mount(crypto_blkdev, DATA_MNT_POINT, fs_type, mnt_flags, fs_options);
 
+            property_set("vold.decrypt", "trigger_load_persist_props");
             /* Create necessary paths on /data */
             if (prep_data_fs()) {
                 return -1;