Bluetooth: Split hci_request helpers to hci_request.[ch]

None of the hci_request related things in net/bluetooth/hci_core.h are
needed anywhere outside of the core bluetooth module. This patch creates
a new net/bluetooth/hci_request.c file with its corresponding h-file and
moves the functionality there from hci_core.c and hci_core.h.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --cc include/net/bluetooth/hci_core.h
Simple merge

diff --cc net/bluetooth/Makefile
Simple merge

diff --cc net/bluetooth/hci_conn.c
Simple merge

diff --cc net/bluetooth/hci_core.c
Simple merge

diff --cc net/bluetooth/hci_event.c
Simple merge

diff --cc net/bluetooth/hci_request.c
Simple merge

diff --cc net/bluetooth/hci_request.h
Simple merge

diff --cc net/bluetooth/mgmt.c
Simple merge