* 1. 在AT32的BSP的drv_gpio中增加了at32_pin_get函数，用于实现rt_pin_ops对象中的pin_get
2. 在MSH中增加了PIN的操作命令
3. 为了方便在MSH命令中解析字符串，增加了一些字符串相关的函数

* add adc_get_vref

add stm32_adc_get_vref

* [STM32][RTC] add support for STM32L0 series.

* Update drv_rtc.c

Reason: Interrupts were not cleaned up during initialization

* update auto connect use sys work.
* add fast connect.
* update wlan cmd, support scan result report user-level callback.
Co-authored-by: Nzetingxu <zetingxu@bestechnic.com>
Co-authored-by: Nliu2guang <liuguang@rt-thread.com>
Co-authored-by: Nguodi <guodi@rt-thread.com>
Co-authored-by: geniusgogo <xpxyr@sina.com>

* [bsp/renesas/docs/] Add English documents

* Disable TRNG function in default configuration.

* Fix building issue

* To catch context of upper file system.
Co-authored-by: NWayne Lin <wclin@nuvoton.com>

* add rt1170 bsp
* add rt1020 bsp

Signed-off-by: NTing Liu <ting.liu@nxp.com>

* Update adc.c

add finsh voltage conversion command

* Add RT_SENSOR_VENDOR_MELEXIS in sensor_cmd.c

print vendor information of Melexis in the function sensor()

* add finsh pwm function