Add init support for dm-verity logging mode

Add a built-in command for loading verity state. If dm-verity
will be started in logging mode, trigger verity-logging.

Needs changes from
  Ibb82953594d234f81ad21c40f524190b88e4ac8f

Change-Id: I5af4918f2f14fdd4d07f51c55837e08111fd3748
diff --git a/init/init_parser.cpp b/init/init_parser.cpp
index 61a5e0a..3932357 100644
--- a/init/init_parser.cpp
+++ b/init/init_parser.cpp
@@ -204,6 +204,9 @@
     case 'u':
         if (!strcmp(s, "ser")) return K_user;
         break;
+    case 'v':
+        if (!strcmp(s, "erity_load_state")) return K_verity_load_state;
+        break;
     case 'w':
         if (!strcmp(s, "rite")) return K_write;
         if (!strcmp(s, "ait")) return K_wait;