Merge bluetooth branch into master

 - Use k_poll to consolidate all TX threads into a single one
 - Reuse HCI command buffers for storing their response
 - Improvements to SDP client support
 - New "volatile subscription" flag to GATT API
 - Various smaller fixes & cleanups here and there

----------------------------------------------------------------
Arkadiusz Lichwa (8):
      Bluetooth: SDP: Get ProtocolDescriptorList attribute internals
      Bluetooth: shell: Add SDP client support
      Bluetooth: uuid: Fix assigned UDP uuid value
      Bluetooth: SDP: Add API to get ProfileDescriptorList attribute
      Bluetooth: shell: Add getting ProfileDescriptorList attribute
      Bluetooth: SDP: Add API to get SupportedFeature attribute
      Bluetooth: shell: Use SupportedFeature attribute API
      Bluetooth: shell: Add support to retrieve A2SRC record

Arun Jagadish (2):
      Bluetooth: AVDTP: Remove buffer pool
      Bluetooth: AVDTP: Add AVDTP Discover Function Definition

Carles Cufi (1):
      Bluetooth: hci_core: Use nRF5x FICR address

Jaganath Kanakkassery (2):
      Bluetooth: RFCOMM: Fix session timer during acl disc
      Bluetooth: RFCOMM: Use common tx pool for control packets

Johan Hedberg (15):
      Bluetooth: Fix trivial coding style issue
      Bluetooth: Fix checking for invalid public address
      Bluetooth: Fix using correct variable type for interrupt mask
      Bluetooth: Fix buffer leak when HCI driver send() fails
      Bluetooth: drivers/h4: Add support for discarding certain events
      Bluetooth: Add convenience macros for common header sizes
      Bluetooth: Kconfig: Merge headroom reserve variables into a single one
      Bluetooth: Controller: Redesign response buffer allocation for commands
      Bluetooth: Reuse HCI command buffers for the command response
      Bluetooth: conn: Use delayed work for LE connection timeout
      Bluetooth: Merge bt_conn TX threads into a single one with k_poll
      Bluetooth: Merge HCI command and connection TX threads
      Bluetooth: samples: Add missing README.rst files
      Bluetooth: Controller: Use LL_ASSERT instead of BT_ASSERT
      Bluetooth: Fix incorrect checks for command buffer user data

Jonathan Gelie (3):
      Bluetooth: GATT: introduce volatile subscription flag
      Bluetooth: GATT: set subscribe value to zero for unsubscription
      Bluetooth: GATT: fixing unsubscription

Luiz Augusto von Dentz (1):
      Bluetooth: GATT: Fix not removing subscriptions safely

Sathish Narasimman (5):
      Bluetooth: HFP HF: Service level connection completed
      Bluetooth: HFP HF: Enable extended AG Error Result Code
      Bluetooth: HFP HF: Indicate disconnect to application
      Bluetooth: HFP HF: Disconnect rfcomm on SLC error
      Bluetooth: HFP HF: Remove unused variable 'buf'

Szymon Janc (5):
      Bluetooth: Use assert when getting net buf with K_FOREVER
      Bluetooth: Remove some dead code
      Bluetooth: L2CAP: Remove dead code
      Bluetooth: SDP: Make bt_sdp_create_pdu static
      Bluetooth: L2CAP: Make l2cap_br_send_conn_rsp return void

 drivers/bluetooth/hci/Kconfig                   |  13 +-
 drivers/bluetooth/hci/h4.c                      |  93 +++-
 drivers/bluetooth/hci/h5.c                      |  47 +-
 drivers/bluetooth/hci/spi.c                     |  13 +-
 drivers/bluetooth/nble/gatt.c                   |  76 +--
 include/bluetooth/buf.h                         |  13 +-
 include/bluetooth/gatt.h                        |  18 +-
 include/bluetooth/hci.h                         |   9 +-
 include/bluetooth/l2cap.h                       |  20 +-
 include/bluetooth/sdp.h                         |  51 ++-
 include/bluetooth/uuid.h                        |   2 +-
 samples/bluetooth/handsfree/README.rst          |  23 +
 samples/bluetooth/hci_uart/src/main.c           |  11 +-
 samples/bluetooth/hci_usb/src/main.c            |  11 +-
 samples/bluetooth/peripheral_sc_only/README.rst |  26 ++
 subsys/bluetooth/controller/hci/hci.c           | 153 ++++---
 subsys/bluetooth/controller/hci/hci_driver.c    |  23 +-
 subsys/bluetooth/controller/hci/hci_internal.h  |   2 +-
 subsys/bluetooth/controller/ll/ctrl.c           |   2 +-
 subsys/bluetooth/host/Kconfig                   |  10 +-
 subsys/bluetooth/host/at.c                      |   2 +-
 subsys/bluetooth/host/at.h                      |   3 +-
 subsys/bluetooth/host/avdtp.c                   |  81 +++-
 subsys/bluetooth/host/avdtp_internal.h          |   7 -
 subsys/bluetooth/host/conn.c                    | 178 ++++----
 subsys/bluetooth/host/conn_internal.h           |  15 +-
 subsys/bluetooth/host/gatt.c                    | 142 +++---
 subsys/bluetooth/host/hci_core.c                | 285 ++++++++----
 subsys/bluetooth/host/hci_core.h                |   6 +
 subsys/bluetooth/host/hci_ecc.c                 |   6 +-
 subsys/bluetooth/host/hci_raw.c                 |  12 +
 subsys/bluetooth/host/hfp_hf.c                  |  50 +-
 subsys/bluetooth/host/l2cap.c                   |  35 --
 subsys/bluetooth/host/l2cap_br.c                |  49 +-
 subsys/bluetooth/host/l2cap_internal.h          |   7 +-
 subsys/bluetooth/host/rfcomm.c                  |  31 +-
 subsys/bluetooth/host/rfcomm_internal.h         |   5 +-
 subsys/bluetooth/host/sdp.c                     | 584 +++++++++++++++++++++++-
 tests/bluetooth/shell/src/main.c                | 172 +++++++
 39 files changed, 1700 insertions(+), 586 deletions(-)
 create mode 100644 samples/bluetooth/handsfree/README.rst
 create mode 100644 samples/bluetooth/peripheral_sc_only/README.rst

Change-Id: I7589dbad8b97477c72d1b856121593bcf6d11339
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>