Set device lock status from kernel command line.

Device is considered to be unlocked if
androidboot.verifiedbootstate is "orange".

Test: adb shell getprop ro.boot.flash.locked

Change-Id: Id3aeec757908ea63a37e28ad880a6c71d53083ac
diff --git a/init/init.cpp b/init/init.cpp
index 3ab0a52..0287e66 100644
--- a/init/init.cpp
+++ b/init/init.cpp
@@ -344,12 +344,12 @@
     if (!android::base::GetBoolProperty("ro.oem_unlock_supported", false)) {
         return;
     }
-
-    std::string value = GetProperty("ro.boot.verifiedbootstate", "");
-
-    if (!value.empty()) {
-        property_set("ro.boot.flash.locked", value == "orange" ? "0" : "1");
-    }
+    import_kernel_cmdline(
+            false, [](const std::string& key, const std::string& value, bool in_qemu) {
+                if (key == "androidboot.verifiedbootstate") {
+                    property_set("ro.boot.flash.locked", value == "orange" ? "0" : "1");
+                }
+            });
 }
 
 static void export_kernel_boot_props() {