Bluetooth: Make l2cap_data_channel return void

l2cap_data_channel always return 0 which is not used anywhere,
make it void function.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
1 file changed