Bluetooth: h5: Do not initialize Configuration field

Initializing Configuration field in H5 Config message to 0x01 gives
wrong impression that the value is used and needed. Later on the whole
field is rewritten with h5_cfg_field().

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>