Set verity mode as the verified property value

Set the verity mode as the value for partition.%s.verified to make it
easier for userspace to determine in which mode dm-verity was started.

Change-Id: Icc635515f8a8ede941277aed196867351d8387cb
diff --git a/init/builtins.cpp b/init/builtins.cpp
index 6daea37..aa5c649 100644
--- a/init/builtins.cpp
+++ b/init/builtins.cpp
@@ -680,8 +680,9 @@
     return rc;
 }
 
-static void verity_update_property(fstab_rec *fstab, const char *mount_point, int status) {
-    property_set(android::base::StringPrintf("partition.%s.verified", mount_point).c_str(), "1");
+static void verity_update_property(fstab_rec *fstab, const char *mount_point, int mode, int status) {
+    property_set(android::base::StringPrintf("partition.%s.verified", mount_point).c_str(),
+                 android::base::StringPrintf("%d", mode).c_str());
 }
 
 int do_verity_update_state(int nargs, char** args) {