This reverts commit 37660ac5.

[Bsp][Tina]Fix uart bug

Fix minilibc time

Add soft rtc

Fix issue when loading *.o when do internal function call

[Bsp][tina]fix linux env error

merge O_CREAT issue

libc_stdio_set_console/newlib uses fopen to open console device, which
has O_CREAT flag and cause fault.

[Bsp]增强F10x_HAL的GPIO中断逻辑

[BSP][tina] New bsp for allwinner tina

cdc_vcom dma 发送流程修改

1. 修改gpio中断没有清标志位的问题

Fox example for the below example code:

#include <stdio.h>

void goodBye(void)
{
	printf("Good Bye!\n");
}

int main(int argc, char* argv[])
{
	printf("Hello World!\n");
	goodBye();
	return 0;
}

整理network示例和tf卡SPI驱动代码