ART: Turn on dex2oat watchdog on target

Activates the watchdog on device.

Bug: 16364458

(cherry picked from commit bf40ddb83e1ea05ba4bc101149cd79f0160c8996)

Change-Id: I06deafa4436991f07bce44ecc6fd9df333f905ee
diff --git a/dex2oat/dex2oat.cc b/dex2oat/dex2oat.cc
index ac3eb39..0f1c8cd 100644
--- a/dex2oat/dex2oat.cc
+++ b/dex2oat/dex2oat.cc
@@ -850,7 +850,7 @@
   bool include_patch_information = CompilerOptions::kDefaultIncludePatchInformation;
   bool include_debug_symbols = kIsDebugBuild;
   bool dump_slow_timing = kIsDebugBuild;
-  bool watch_dog_enabled = !kIsTargetBuild;
+  bool watch_dog_enabled = true;
   bool generate_gdb_information = kIsDebugBuild;
 
   // Checks are all explicit until we know the architecture.