Merge changes I7cc676cb,Ib2a58823,I2795f034,I5bb782f3,I6311bd6d, ...

* changes:
  Add polling thread pid to hid control block
  Streamline stack/acl/btm_acl::BTM_SetLinkSuperTout
  Canonically include crypto in stack/gatt/gatt_sr_hash
  Canonically include stack/gatt::
  Include gd/hal/hci_hal_host::<netinet/in.h>
  Remove useless #def BTM_LE_BR_KEYS_REQ_EVT