Fix Advertising_instance address when multi-adv device is connected

The Advertising_instance address need be obtained from the event of LE multi-advertising state Change sub-event(0x55) when multi-adv device connect

smp get multi-adv mac address error. Cause follow fail
1. Bluetooth LE Insecure Client Test ---Fail
2. Bluetooth LE Insecure Server Test ---Fail
3. Bluetooth LE CoC Secure Client Test ---Fail
4. Bluetooth LE CoC Secure Server Test ---Fail

Bug: 247945201
Test: the CTS verifier cases

Change-Id: Ib3d6da458b7eeae55432f0adeee91fb5d57a2fbd
Signed-off-by: hong.wang <hong.wang@amlogic.com>