add cortex-a fpu support

[bugfix][net][netdev] Update netdev->ip_addr&gw&netmask after registered.

[bsp][stm32] 修改一些 bsp 的 shell 线程栈大小为 4096

Fix drivers

为潘多拉添加 usb device 支持

Fix eclipse

1.修复ifconfig命令无法正确显示IP，网关，掩码的问题
2.lwip_2.1.0，增加netdev->mtu = lwip_netif->mtu;

修复ifconfig命令无法正确显示IP，网关，掩码的问题

修复ifconfig命令无法正确显示IP，网关，掩码的问题

[DeviceDriver][SPI] Cleanup the at45db/gd25q/w25q/sst25v SPI flash driver. Please using SFUD instead of them.

修复ifconfig命令无法正确显示IP，网关，掩码的问题

修复ifconfig命令无法正确显示IP，网关，掩码的问题

[net][netdev] Update netdev->ip_addr&gw&netmask after registered.

[BSP][STM32] 增加RT_USING_CPU_FFS配置选项

[net][at] Fix socket create failed issue when default netdev mismatch.

[net][sal] Improve the sal_bind() function

Signed-off-by: chenyong <1521761801@qq.com>

Signed-off-by: chenyong <1521761801@qq.com>

kconfig中增加RT_USING_CPU_FFS配置选项，并且默认开启

sync

[net][at] update AT component V1.3.0

1.add bsp stm32f103-ufun.

- AT Socket feature supports multi-client connections;
- Fix `send data error, current socket (0) state (0) is error` issue when the socket is closed;
- Improve dirty data processing when AT device hard reset;
- Improve `at_obj_set_urc_table()` fucntion, Support for setting multiple URC tables;
- Improve RAW data print format;

[components][drivers] add hardware crypto device

[bsp][stm32][f469-disco]Separation of MIPI-LTCDC and LCD Configuration