code: release 1.4.0

sdk: update code to sdk release v1.3.1

WLAN:
* Fixed compatibility problems with the network assistant unable to lock the channel
* Added interface for generating 32-byte psk based on ssid, passphrase

CedarX & Audio decoder
* Support AAC SBR, m3u8, HTTPS (libcedarx_pro.a)
* support play online audio stream
* Memory save
* Fix playback m4a memory leak problem
* Solve several bugs

Driver
* Fix adc channel 8 detection voltage is not accurate
* Fix SPI crossover error
* Disable watchdog interrupt mode by default
* Several driver DMA configuration optimization
* XR809 flash support

General
* Memory save
* Support time(), gettimeofday(), support time zone settings
* Support for generating mac addresses based on chip id
* Sound wave optimization (the new method is not compatible with the old version)
* Solve the problem of OTA file upgrade and pull out SD card crash
* Simplify dhcp server configuration implementation

Tool
* mkimage adds extensions: generate img files with OTA information
* phoenixMC: update the linux version to resolve some compatibility issues
* oem_cli_tool: Fixed a problem when the flash read length was between 128-1024
* Voiceprint distribution network apk: new data packet transmission network distribution method
* smartconfig apk: the port number of receiving UDP packets is changed from 10000 to 10001

Documentation
* XR871声波配网升级指导.pdf
* XR871_RF_Validation_Report_V1.0-EN

===============================================================
* WiFi
* 修复配网助手无法锁定信道的兼容性问题
* 增加接口用于根据ssid、passphrase生成32-byte psk

* 播控
* 支持AAC SBR、m3u8、HTTPS(libcedarx_pro.a)
* 增加queue stream以支持音频数据流
* 内存优化
* 修复播放m4a内存泄漏问题
* 解决若干bug

* 驱动
* 修复adc channel 8检测电压不准的问题
* 修复SPI分频不准问题
* disable watchdog interrupt mode by default
* 若干驱动DMA配置优化
* XR809 SIP flash型号的支持

* 综合
* 内存优化
* 支持time(), gettimeofday()，支持时区设置
* 支持根据chip id生成mac地址
* 声波配网优化(优化方案与旧方案不兼容)
* 解决OTA file升级拔出SD卡死机的问题
* 精简dhcp server配置的实现方式

* 工具
* mkimage增加扩展功能：生成带有OTA信息的img文件
* phoenixMC：更新linux版本，解决部分兼容性问题
* oem_cli_tool：修复flash读取长度为128-1024之间时失败的问题
* 声纹配网apk：新增数据分组发送的配网方式
* smartconfig apk：接收UDP包的端口号由10000改为10001

* 文档
* XR871声波配网升级指导
* XR871_RF_Validation_Report_V1.0-EN

sdk: update code to sdk release v1.3.0

Cedarx:
  1. add http read timeout setting, and timeout is 15s by default
  2. fixed http chunkec network paly back errory
  3. optimeze mp1/2 decoder
  4. improve amr response speed for online playback
  5. fix some other bugs
  6. support aac/m4a demo(temp version)

Audio:
  1. support ac102 driver
  2. support linein
  3. update audio driver APIs, Note:*** need to update the board_config.c
  4. move PA parameters configuration into board_config.c

Network:
  1. optimize network throuthput stability
  2. optimize lwip options
  3. iperf function extension
  4. ping: add data length parameter
  5. mbedTLS supports hardware accelator for AES/SHA ..
  6. optimize airkiss and smartconfig

System:
  1. optimize sleep/wakeup
  2. support XR809 configuration
  3. add flash write protection function
  4. fix gpio irq bugs
  5. cmd: support thread infomation

Tools:
  1. PhoenixMC support to erase custom area
  2. add SoundAuthenticationTest.apk
  3. oem_cli_tool: add flash erase/read/write operations

code: add libadt.a

Description: Update SDK code to V1.1.0

From: 90b32d6f2e7d6c3e8dd013545de49f9aaa3dffd9(xradio_iot_wlan_sdk-1.1.0-20180126)
Change Log: https://github.com/XradioTech/XR871/wiki/Change-log#sdk-v110-release-log
Function:
1. support lwip2.0.3, use lwip1.4.1 by default, define 'export __CONFIG_LWIP_V1 := n' in localconfig.mk to enable it
2. support libwebsocket client and server
3. add wlan user config api to change the wlan powermode, ap dtim interval, ampdu tx number, etc.
4. optimize AP compatibility for smartconfig
5. update wlan firmware for better stability
6. update mkimage tool for ubuntu 32bit/64bit OS
7. update link script file *.ld to move more code to xip section for each projects
8. add pm example
9. modify WEP key format
10.check sysinfo address when system starts up
11.update dhcpd for lwip2.0.3
12.update iperf implimentation and iperf commands for executing multi iperf tasks
13.fixup sysctrl bug
14.fixup nopoll and httpc bugs
15.fixup cedarx bugs

SDK: doc, add ubuntu/windows phoenixMC tool documents