Allow rkpdapp tests to link bouncycastle-unbundled

rkpdapp is a port of the RemoteProvisioner application from a system
app into a mainline module. As such, we need to include rkpdapp's tests
in the bouncycastle-unbundled visibilility as we did for
RemoteProvisioner.

Test: atest RkpdAppUnitTests
Bug: 260101178
Change-Id: I2ddf4ebe3dff566255482805d8e401d8480a04a7
diff --git a/Android.bp b/Android.bp
index 6e31737..f9b91d8 100644
--- a/Android.bp
+++ b/Android.bp
@@ -172,6 +172,7 @@
     "//packages/apps/KeyChain",
     "//packages/apps/RemoteProvisioner/tests/unittests",
     "//packages/modules/Connectivity/tests/cts/net",
+    "//packages/modules/RemoteKeyProvisioning/app/tests/unit",
     "//packages/modules/Wifi/service",
     "//packages/modules/Wifi/service/tests/wifitests",
     "//libcore",