P2P: Fix ApSta auth/death with null p2p_dev_add

Fixed notifyApStaAuthorized/Deauthorized SupplicantP2pIfaceCallbacks not
being sent if they have a null p2p_dev_addr. Callback now sends all
zeros  for the p2p_dev_addr if it's null.

Bug: 37961262
Test: Manual verification with LINKS app
Change-Id: I53f90a5e88ba47772b8b9fa30e93561440626775
2 files changed