Add vendor_available to libz

This, when used with BOARD_VNDK_VERSION flag, enables the
module to be built and installed twice, one for /system,
other for /vendor

Details: https://android-review.googlesource.com/368372

Bug: 33241851
Test: Set BOARD_VNDK_VERSION:=current in BoardConfig.mk
Change-Id: Ibf4dcc34ba73834c5d9a19412be90724f94e0a6d
Merged-In: I64fc420e19fe1d9cdcd7500ff64cebd6a768ce81
(cherry picked from commit 8f5df0ce56ba628ab636fce5a99de5b9ad175779)

1 files changed, 1 insertions, 0 deletions

diff --git a/Android.bp b/Android.bp
index a73f091..45c37bc 100644
--- a/Android.bp
+++ b/Android.bp
@@ -52,6 +52,7 @@ cc_library {
     defaults: ["zlib_defaults"],
 
     host_supported: true,
+    vendor_available : true,
 
     target: {
         host: {