Merge bluetooth branch into master

 - Assert fixes to controller state transitions
 - AVDTP fixes & improvements
 - SDP fixes & improvements
 - HFP improvements
 - GATT fixes
 - New GATT API for getting current MTU

----------------------------------------------------------------
Arun Jagadish (3):
      Bluetooth: AVDTP: Add AVDTP Receive Function
      Bluetooth: AVDTP: Fix discover param struct
      Bluetooth: AVDTP: Rename of variables

Carles Cufi (4):
      Bluetooth: controller: Use direct ISRs
      Bluetooth: controller: Set debug pins with macros
      Bluetooth: controller: Introduce debug pins Kconfig option
      Bluetooth: controller: Report 5.0 compliant controller

Jaganath Kanakkassery (1):
      Bluetooth: SDP: Server: Introduce private define for max services

Johan Hedberg (3):
      Bluetooth: Add support for Bluetooth 5.0 version specifier
      Bluetooth: Relax minimum advertising interval for 5.0 controllers
      Bluetooth: samples: Add combined observer & broadcaster app

Kaustav Dey Biswas (5):
      Bluetooth: SDP: Server: Fix MTU setting after l2cap connection
      Bluetooth: SDP: Server: Set security level to NONE
      Bluetooth: SDP: Server: Refactor data element structure header
      Bluetooth: SDP: Server: Handle Service Search request
      Bluetooth: SDP: Server: Filter records based on requested uuids

Luiz Augusto von Dentz (4):
      Bluetooth: GATT: Use __ASSERT for invalid parameters
      Bluetooth: GATT: Add bt_gatt_get_mtu API
      Bluetooth: L2CAP: Move functions in preparation for queuing
      Bluetooth: L2CAP: Add TX queueing for LE CoC

Maureen Helm (1):
      Bluetooth: samples: Add hexiwear_k64 and frdm_k64f to tests

Piyush Itankar (2):
      Bluetooth: A2DP: Stream End Point Registration
      Bluetooth: A2DP: Added Preset Structure

Sathish Narasimman (4):
      Bluetooth: AT: Fix 'signed' warning
      Bluetooth: HFP HF: Handling AG Network error
      Bluetooth: HFP HF: SCO: Add esco supported pkt type
      Bluetooth: HFP HF: SCO: Accept eSCO conn request

Szymon Janc (9):
      Bluetooth: shell: Fix accessing invalid memory
      Bluetooth: shell: Fix typo
      Bluetooth: SMP: Fix passkey entry for legacy pairing
      Bluetooth: shell: Don't echo LE CoC data
      Bluetooth: Fix connection object leak
      Bluetooth: shell: Simplify indication in gatt-subscribe
      Bluetooth: shell: Fix GATT long write support
      Bluetooth: GATT: Remove not needed variable
      Bluetooth: GATT: Fix subscriptions removal

Vinayak Chettimada (6):
      Bluetooth: Controller: Use direct ISR for Radio IRQ only
      Bluetooth: Controller: Fix LE Ping PDU dispatch
      Bluetooth: Controller: Run all enqueued mayfly before disable
      Bluetooth: Controller: Kconfig option to set public address
      Bluetooth: Controller: Fix assert on role stop/abort
      Bluetooth: Controller: mayfly enable to supercede over disable

 include/bluetooth/a2dp-codec.h               |  73 +++++
 include/bluetooth/a2dp.h                     |  61 +++++
 include/bluetooth/conn.h                     |   2 +
 include/bluetooth/gatt.h                     |  11 +
 include/bluetooth/hci.h                      |  50 ++++
 include/bluetooth/l2cap.h                    |   4 +
 include/bluetooth/sdp.h                      | 103 ++++---
 samples/bluetooth/peripheral_hr/testcase.ini |   2 +-
 samples/bluetooth/scan_adv/Makefile          |   5 +
 samples/bluetooth/scan_adv/README.rst        |  25 ++
 samples/bluetooth/scan_adv/prj.conf          |   2 +
 samples/bluetooth/scan_adv/src/Makefile      |   1 +
 samples/bluetooth/scan_adv/src/main.c        |  75 +++++
 samples/bluetooth/scan_adv/testcase.ini      |   4 +
 subsys/bluetooth/controller/Kconfig          |  15 +
 subsys/bluetooth/controller/hal/debug.h      | 124 ++++-----
 subsys/bluetooth/controller/hal/nrf5/radio.c |   4 +-
 subsys/bluetooth/controller/hal/radio.h      |   2 +-
 subsys/bluetooth/controller/hci/hci.c        |   2 +-
 subsys/bluetooth/controller/hci/hci_driver.c |  22 +-
 subsys/bluetooth/controller/ll/ctrl.c        | 229 ++++++++++++----
 subsys/bluetooth/controller/util/mayfly.c    |  58 +++-
 subsys/bluetooth/controller/util/mayfly.h    |   4 +-
 subsys/bluetooth/host/Kconfig                |   9 +
 subsys/bluetooth/host/a2dp.c                 |  19 ++
 subsys/bluetooth/host/at.c                   |  53 +++-
 subsys/bluetooth/host/at.h                   |  38 ++-
 subsys/bluetooth/host/avdtp.c                |  63 ++++-
 subsys/bluetooth/host/avdtp_internal.h       |  14 +-
 subsys/bluetooth/host/conn.c                 |  60 +++-
 subsys/bluetooth/host/conn_internal.h        |  10 +
 subsys/bluetooth/host/gatt.c                 |  86 +++---
 subsys/bluetooth/host/hci_core.c             |  92 ++++++-
 subsys/bluetooth/host/hci_core.h             |   8 +
 subsys/bluetooth/host/hfp_hf.c               |  15 +-
 subsys/bluetooth/host/l2cap.c                | 319 +++++++++++++---------
 subsys/bluetooth/host/sdp.c                  | 391 +++++++++++++++++++++++++--
 subsys/bluetooth/host/sdp_internal.h         |   2 +
 subsys/bluetooth/host/smp.c                  |   1 -
 tests/bluetooth/shell/src/main.c             |  98 ++++---
 40 files changed, 1728 insertions(+), 428 deletions(-)
 create mode 100644 include/bluetooth/a2dp-codec.h
 create mode 100644 samples/bluetooth/scan_adv/Makefile
 create mode 100644 samples/bluetooth/scan_adv/README.rst
 create mode 100644 samples/bluetooth/scan_adv/prj.conf
 create mode 100644 samples/bluetooth/scan_adv/src/Makefile
 create mode 100644 samples/bluetooth/scan_adv/src/main.c
 create mode 100644 samples/bluetooth/scan_adv/testcase.ini

Change-Id: I94f2f9f4431e21da9aae00c9e32581acb383ad49
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>