[bsp][stm32f10x-HAL] add rtc driver

[Components][drivers][usb]修复非对齐访问异常

[bsp][amebaz]支持IAR工程及smartconfig配网

解决usb相关问题

1) usb驱动中时间未与RT_TICK_PER_SECOND关联问题,RT_TICK_PER_SECOND变化时,这些时间将发生变化
解决: 增加USB_TIMEOUT_BASIC/USB_TIMEOUT_LONG/USB_DEBOUNCE_TIME
2) 修正rt_usbh_detach_instance函数使用device->cfg_desc前未判断是否有效. 可导致abort
3) rt_usbh_hub_port_change增加device->port初始化,否则struct uhcd_ops相关函数无法直接得到端口号

[kernel][mem] Improve some ISR check range.

[bsp][stm32f4xx-HAL] fix iwg driver.

[BSP][all NXP]change license to Apache-2.0

[bsp][amebaz] BSP工程更新，适配新的WLAN框架

[BSP][IMXRT] change license to Apache license v2.0

[driver][iwdg]add iwdg driver. | 添加iwdg驱动,参考:stm32f4xx-HAL/driver_wdg

修改at_client.c 传入参数timeout单位是ms,此处需要转换为tick

[components][wlan] 兼容lwip1.4

[components][wlan] 修复某些情况下模式初始化两遍的bug

[components][net] dhcpd Support LWIP2.0 and LWIP1.4

修复iar dlib时间映射函数的函数声明，适应不同版本的iar

[license] Change the license to Apache

Fix sal

[license] Fix the bad license header for lpc24xx.

fix at socket issue