keystore: allow system UID to WiFi or VPN

Previously we redirected all calls from the wifi or vpn UIDs to the
system UID's namespace. This switches the paradigm to allow system to
write into wifi and vpn UID keystore spaces instead.

Change-Id: Ib9144cb12435b09ab2e8c24b75366cf9762965fe
1 file changed
tree: daa0a29fd37c8cc41433201a69fd058b92202bdb
  1. keystore/
  2. keystore-engine/
  3. softkeymaster/