Bluetooth: Add event_value to BluetoothClassicPairingEventReported

* Add an event_value field to log status value such as
 - encryption enabled state
 - simple pairing mode
 - secure connection host support
 - delete all flag

Bug: 128966402
Test: make
Change-Id: I512b7a1a7fba73ea30bca028566d43d353c56613