Bluetooth: Fix for hash map table entry for Advertisement

Addition of callback to the hash map is been decided based on the
success of multi advertiser callback i.e advertiser callback will be added
iff the advertisment is succesfull.

Conflicts:
	core/java/android/bluetooth/le/BluetoothLeAdvertiser.java

Change-Id: I90e810fdee944c1a82729bdf7fcd9ed26f5eb094
CRs-fixed: 721903