[BSP] Fix component initialization functions may be not sequential storage on ROM when used for IAR linker.

[Bsp] stm32f107 spi drv : dma add irq

[bsp] 在龙芯1c的编译配置脚本“rtconfig.py”中增加“交叉编译工具链的说明”

使用龙芯官方推出的那个用于编译linux的交叉编译工具链来编译RT-Thread会报错，
可以使用RT-Thread官方推荐那个

[bsp] fixed scons building error and update mdk project

[kernel] add main thread macro and rename tiny memory macro

[bsp] remove unused file, update SConscript and mdk project

[bsp] add new bsp for stm32l475 IoT discovery kit

[BSP] stm32f10x add watchdog driver

[DeviceDrivers] add fm24clxx drv. 

[BSP] Modify loongson1c interrupt part code.

把栈从4字节改为8字节对齐（浮点需要8字节对齐）

[Components] correct msh argc too many error

[bsp] Add GPIO/PWM/timer drivers to RT-Thread.

[bsp] fixed uart5 tx rcc error

[bsp] add new bsp for stm32l476-nucleo

[DeviceDrivers] improve sdio