L2CAP connect requests and create channel requests share a significant
amount of code.  This change moves common code to a new function.
Signed-off-by: NMat Martineau <mathewm@codeaurora.org>
Signed-off-by: NAndrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: NMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>