Make sure that ro.dalvik.vm.native.bridge is always set.

A value of "0" means that native bridge is disabled.

Bug: 17104449

Change-Id: Id68afe305cd11471fed8aa3f5568e5dbfc22166c
diff --git a/target/product/runtime_libart.mk b/target/product/runtime_libart.mk
index 8f5f24d..e4200b3 100644
--- a/target/product/runtime_libart.mk
+++ b/target/product/runtime_libart.mk
@@ -28,5 +28,6 @@
     dalvik.vm.image-dex2oat-Xmx=64m \
     dalvik.vm.dex2oat-Xms=64m \
     dalvik.vm.dex2oat-Xmx=512m \
+    ro.dalvik.vm.native.bridge=0 \
 
 include $(SRC_TARGET_DIR)/product/runtime_common.mk