Merge changes I9dee4893,Id30ad44e,I77837cc5,Iebd60d4e,Ie2237ad8, ...

* changes:
  Re-log stack/btm/btm_ble::BTM_BleSetPhy
  Use common API to set hci handle
  Add common API to set hci handle
  gd: Add monitor ability to receive packet credits
  Move _process_num_completed_pkts into acl
  Streamline stack/l2cap/l2c_link::l2c_link_process_num_completed_pkts