Function bt_br_write_eir 

pub unsafe extern "C" fn bt_br_write_eir(
    eir: *const bt_data,
    eir_count: usize,
    fec_required: bool,
) -> i32

@brief Write Extended Inquiry Response data.

Write the extended inquiry response data to be sent during the extended inquiry response procedure.

@param eir Array of bt_data elements to include in the EIR. @param eir_count Number of elements in the @p eir array. @param fec_required Whether FEC encoding is required (true/false).

@return Zero for success, non-zero otherwise.