Create a token for the AttributionSource CameraSource passes to connect

If an AttributionSource does not have a token, data delivery permission checks
fail with "Attempt to invoke interface method
'void android.os.IBinder.linkToDeath(android.os.IBinder$DeathRecipient, int)'
on a null object reference" due to the null binder. Create a token before
passing it to connect.

Bug: 190657833
Flag: com.android.internal.camera.flags.data_delivery_permission_checks
Test: Ran CtsCameraTestCases
Change-Id: I83c760c8a81976d899b75942eb5177baaa590a16