Update dependencies for vibrator vts.

It uses the implicit cast in libhidlbase.

Test: compiles with CL 308798 on AOSP.
Change-Id: I1e026cae56ff5e394df7313f09715c0cf5fc28e0
diff --git a/vibrator/1.0/vts/functional/Android.bp b/vibrator/1.0/vts/functional/Android.bp
index e893ec6..a24cf5c 100644
--- a/vibrator/1.0/vts/functional/Android.bp
+++ b/vibrator/1.0/vts/functional/Android.bp
@@ -20,6 +20,7 @@
     srcs: ["vibrator_hidl_hal_test.cpp"],
     shared_libs: [
         "libbase",
+        "libhidlbase",
         "liblog",
         "libutils",
         "android.hardware.vibrator@1.0",