Add allowed dependencies for tethering in mainline-prod.

We are in the process of snapping the Tethering module in
mainline-prod to AOSP HEAD so we can re-enable the automerger.
This CL adds the necessary dependencies. These are mostly
already present in the allowed_deps file in AOSP master.

Generated by build/soong/scripts/update-apex-allowed-deps.sh .

The merged-in tag is from aosp/1549716, which added one of these
dependencies. This change should not automerge to any branch
because sc-dev and downstream branches already have all these
dependencies.

Test: m
Bug: 167645754
Change-Id: I0216372f973f3d8fa75f7edb2990b9e9db48e3f7
Merged-In: Ief5ffbb96c216796e4f0f4cacbde7c08f4af274a