[BR01.4] Explicitedly statically link to struct library

Struct library was statically linked in netlink library.
It is now dynamically linked for netlink library, so add it as
static library when building tethering apk.

Test: atest FrameworksNetTests:android.net.connectivity.com.android.server.BpfNetMapsTest
Test: atest ConnectivityCoverageTests:android.net.connectivity.com.android.net.module.util.StructTest
Bug: 297836825
Change-Id: Ia08d573054844df8ac18fec33c37ef51eaa14c9d
1 file changed