Fix BLE device reconnections

Some BLE devices would advertise using both their RPA and Public
address. If such device was discovered using it's RPA, but later it's
overriden by Public address, we might have trouble reconnecting to it
due to the logic in whitelist handling code. This logic should prefer
Identity Address over any other type of address.

Test: Bond with BLE device, modify the AddrType in bt_config.conf file,
try to reconnect. We should use Address Type stored in LE_KEY_PID
Bug: 141186673
Bug: 139825901
Bug: 140847046
Change-Id: If27032f53dd655983ee5d5bc6d07b55d7458078f