Bluetooth: Controller: Fix an error code in ll_adv_sync_ad_data_set

When an advertising set is not configured for periodic advertising,
the correct error to return is BT_HCI_ERR_CMD_DISALLOWED

Fixes EBQ test failure of HCI/DDI/BI-70-C

Signed-off-by: Troels Nilsson <trnn@demant.com>