Make some build targets visible to art sdk

Bug: 142935992
Test: m art-module-sdk art-module-host-exports art-module-test-exports
Change-Id: Id9e0deb00ae5382a48f0ad7a0b353d84d14dd76e
diff --git a/NativeCode.bp b/NativeCode.bp
index 25c128b..2be67bf 100644
--- a/NativeCode.bp
+++ b/NativeCode.bp
@@ -202,6 +202,7 @@
 cc_library_shared {
     name: "libjavacoretests",
     visibility: [
+        "//art/build/sdk",
         "//cts/tests/libcore/luni",
     ],
     defaults: ["core_native_default_flags"],