Bluetooth: AMP: Check for hs_hcon instead of ctrl_id

When deciding whether to send EFS configuration response with success,
check rather for existence of High Speed physical link hs_hcon then
ctrl_id. There might be cases when there is ctrl_id but high speed link
is not established yet.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>