Mark libsubzero as vendor

Bug: 70191319
Test: $ lunch aosp_arm-userdebug; BOARD_VNDK_VERSION=current m -j
      $ emulator # boot to home screen

Change-Id: Id19a847072f2f0b55184c183647889c1a1b53aef
Reviewed-on: https://swiftshader-review.googlesource.com/14688
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>
diff --git a/src/Reactor/Android.mk b/src/Reactor/Android.mk
index 7ff604f..dff990d 100644
--- a/src/Reactor/Android.mk
+++ b/src/Reactor/Android.mk
@@ -21,6 +21,7 @@
 
 LOCAL_MODULE := libsubzero
 LOCAL_MODULE_TAGS := optional
+LOCAL_VENDOR_MODULE := true
 
 SUBZERO_PATH := ../../third_party/subzero
 LLVMDEPENDENCIES_PATH := ../../third_party/llvm-subzero