Consolidate code sending data to LE CoC channels and adds proper
accounting of packets sent, the remaining credits and how many packets
are queued.
Signed-off-by: NLuiz Augusto von Dentz <luiz.von.dentz@intel.com>
Acked-by: NJukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>