Merge bluetooth branch into master

Most of these changes are already in the release branch, so this is
mostly to make sure master keeps up. Main changes:

 - Coverity fixes
 - Controller fixes
 - Add more RFCOMM initiator support
 - Add Data Length Extension HCI command support to controller

----------------------------------------------------------------
Carles Cufi (1):
      Bluetooth: Controller: Implement missing DLE commands

Jaganath Kanakkassery (2):
      Bluetooth: RFCOMM: Refactor rfcomm_handle_pn()
      Bluetooth: RFCOMM: Initiate DLC

Johan Hedberg (2):
      Bluetooth: Use convenience macros for timeout durations
      Bluetooth: doc: Fix reference to documentation location

Luiz Augusto von Dentz (3):
      Bluetooth: GATT: Fix using att_ prefix
      Bluetooth: GATT: Fix using out of scope variable
      Bluetooth: L2CAP: Fix regression with move to k_sem API

Mariusz Skmara (1):
      Bluetooth: Fix not sending L2CAP Connection Parameters Update Request

Szymon Janc (6):
      Bluetooth: Fix use of deprecated PRIMARY init level
      Bluetooth: Kconfig: Fix BR/EDR dependencies
      Bluetooth: Fix address type use for passive scanning
      Bluetooth: Kconfig: Remove deprecated dependency for ECC support
      Bluetooth: tests: Fix Makefiles comments
      Bluetooth: Kconfig: Remove deprecated dependency on NANO_TIMEOUT

Vinayak Chettimada (6):
      Bluetooth: Controller: Fix HCI Reset Command implementation
      Bluetooth: Controller: Fix observer filter_policy field size
      Bluetooth: Controller: Fix incorrect auto variable init
      Bluetooth: Controller: Remove unused util functions
      Bluetooth: Controller: Fix incorrect irq priority check
      Bluetooth: Controller: Fix suspicious use of sizeof

 doc/subsystems/bluetooth/bluetooth.rst         |   2 +-
 drivers/bluetooth/hci/h5.c                     |   4 +-
 drivers/bluetooth/nble/conn.c                  |   2 +-
 include/bluetooth/gatt.h                       |   3 +-
 include/bluetooth/hci.h                        |  20 ++-
 samples/bluetooth/eddystone/src/main.c         |   2 +-
 subsys/bluetooth/Kconfig                       |   1 -
 subsys/bluetooth/controller/hci/hci.c          |  47 +++++-
 subsys/bluetooth/controller/hci/hci_driver.c   |   9 +-
 subsys/bluetooth/controller/ll/ctrl.c          | 244 ++++++++++++++++++++++---------
 subsys/bluetooth/controller/ll/ctrl.h          |  19 ++-
 subsys/bluetooth/controller/ll/ctrl_internal.h |  17 ++-
 subsys/bluetooth/controller/ll/ticker.c        |   2 -
 subsys/bluetooth/controller/util/mem.c         |   2 +-
 subsys/bluetooth/controller/util/util.c        |  97 ------------
 subsys/bluetooth/controller/util/util.h        |   3 -
 subsys/bluetooth/controller/util/work.c        |   2 +-
 subsys/bluetooth/host/Kconfig                  |   5 +-
 subsys/bluetooth/host/att.c                    |   2 +-
 subsys/bluetooth/host/conn.c                   |   8 +-
 subsys/bluetooth/host/gatt.c                   | 111 +++++++-------
 subsys/bluetooth/host/hci_core.c               |  28 ++--
 subsys/bluetooth/host/l2cap.c                  |   6 +-
 subsys/bluetooth/host/l2cap_br.c               |   8 +-
 subsys/bluetooth/host/monitor.c                |   2 +-
 subsys/bluetooth/host/rfcomm.c                 |  90 ++++++++++--
 subsys/bluetooth/host/rfcomm_internal.h        |   3 +
 subsys/bluetooth/host/smp.c                    |   2 +-
 tests/bluetooth/shell/Makefile                 |   2 +-
 tests/bluetooth/tester/Makefile                |   2 +-
 30 files changed, 453 insertions(+), 292 deletions(-)

Change-Id: I9ab10264bfbef250221b7a7ef6f8bcec00215670
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>