bxcan fix align

Add GPIO Out_OD mode config In stm32f10x bsp

change to APB1

Missing of 'GPIO_EXTILineConfig' may cause that program enters interrupt handler forever.

1. Change the type of cmd to 'int';
2. Remove RT_LWIP_USING_RT_MEM macro;

[bsp] Prevent compilation errors in bxcan.c when using STM32F10X_LD_VL,STM32F10X_MD_VL,STM32F10X_HD_VL incorrectly choose to use the RT_USING_CAN.

[bsp] Fix a CAN interrupt number macro definition bug for STM32F10X_LD,STM32F10X_MD and STM32F10X_XL series.