keystore: Allow network_stack uid to use AID_WIFI

The wifi stack will be running inside the network_stack process for
devices which will accept wifi mainline module in R. So, add a effective
uid entry to allow calls from wifi stack inside network_stack to use
keystore blobs stored by wifi uid.

Bug: 142298627
Test: Compiles, will verify failing tests.
Change-Id: Iff19bcad134a3531934215ea4b7d975433da787d
1 file changed