Robust Caching - client hash calculation

This code was extracted from a bigger patch in order to make review
easier.

Bug: 154056389
Test: atest net_test_stack_gatt_db_native
Tag: #feature
Change-Id: I7d1a90d656db3e58b9386c008c0aacdeae6c854a
diff --git a/system/bta/Android.bp b/system/bta/Android.bp
index 199398b..ef69142a 100755
--- a/system/bta/Android.bp
+++ b/system/bta/Android.bp
@@ -133,6 +133,7 @@
         "libprotobuf-cpp-lite",
     ],
     static_libs: [
+        "crypto_toolbox_for_tests",
         "libbtcore",
         "libbt-bta",
         "libbt-audio-hal-interface",