iorap: Fix ro.iorapd.enable property naming

Rename from iorapd.enable to ro.iorapd.enable to match init scripts.

This avoids logspam when iorapd is disabled.

Bug: 123637697
Test: reboot and look at logcat
Change-Id: I741071918ba16191890f3fe3de3764013e0e4ee1
diff --git a/startop/iorap/src/com/google/android/startop/iorap/IorapForwardingService.java b/startop/iorap/src/com/google/android/startop/iorap/IorapForwardingService.java
index 9a30b35..22fc159 100644
--- a/startop/iorap/src/com/google/android/startop/iorap/IorapForwardingService.java
+++ b/startop/iorap/src/com/google/android/startop/iorap/IorapForwardingService.java
@@ -50,8 +50,8 @@
     public static final String TAG = "IorapForwardingService";
     /** $> adb shell 'setprop log.tag.IorapdForwardingService VERBOSE' */
     public static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
-    /** $> adb shell 'setprop iorapd.enable true' */
-    private static boolean IS_ENABLED = SystemProperties.getBoolean("iorapd.enable", true);
+    /** $> adb shell 'setprop ro.iorapd.enable true' */
+    private static boolean IS_ENABLED = SystemProperties.getBoolean("ro.iorapd.enable", true);
     /** $> adb shell 'setprop iorapd.forwarding_service.wtf_crash true' */
     private static boolean WTF_CRASH = SystemProperties.getBoolean(
             "iorapd.forwarding_service.wtf_crash", false);