Function sdm_channel_disable 

pub unsafe extern "C" fn sdm_channel_disable(
    chan: *mut sdm_channel_t,
) -> i32

@brief Disable the Sigma Delta channel

@note This function will do the opposite work to the sdm_channel_enable()

@param[in] chan SDM channel created by sdm_new_channel @return - ESP_OK: Disable SDM channel successfully - ESP_ERR_INVALID_ARG: Disable SDM channel failed because of invalid argument - ESP_ERR_INVALID_STATE: Disable SDM channel failed because the channel is not enabled yet - ESP_FAIL: Disable SDM channel failed because of other error