sepolicy change for NetworkStack signature

Update the seinfo to the new network_stack seinfo, as the network stack
is now using its own certificate.
Remove the hard-coded package name, which may differ depending on
devices, and specify (uid, signature, priv-app) instead.

Bug: 124033493
Test: m
Change-Id: If3bbc21cf83f5d17406e9615833ee43011c9c9bc
3 files changed