[libcpu/riscv]解决smp下cpuport.h中的编译问题

[heyuanjie87]

拉取/合并请求描述：(PR description)

[

为什么提交这份PR (why to submit this PR)

解决如下编译问题

/mnt/f/github/rt-thread/libcpu/risc-v/common64/cpuport.h: Assembler messages:
/mnt/f/github/rt-thread/libcpu/risc-v/common64/cpuport.h:18: Error: unrecognized opcode `typedef union{'
/mnt/f/github/rt-thread/libcpu/risc-v/common64/cpuport.h:19: Error: unrecognized opcode `unsigned long slock'
/mnt/f/github/rt-thread/libcpu/risc-v/common64/cpuport.h:20: Error: unrecognized opcode `struct __arch_tickets{'
/mnt/f/github/rt-thread/libcpu/risc-v/common64/cpuport.h:21: Error: unrecognized opcode `unsigned short owner'
/mnt/f/github/rt-thread/libcpu/risc-v/common64/cpuport.h:22: Error: unrecognized opcode `unsigned short next'
/mnt/f/github/rt-thread/libcpu/risc-v/common64/cpuport.h:23: Error: junk at end of line, first unrecognized character is `}'
/mnt/f/github/rt-thread/libcpu/risc-v/common64/cpuport.h:24: Error: junk at end of line, first unrecognized character is `}'
scons: *** [build/kernel/components/lwp/arch/risc-v/rv64/lwp_gcc.o] Error 1

In file included from /mnt/f/github/rt-thread/include/rttypes.h:148,
                 from /mnt/f/github/rt-thread/include/rtsched.h:14,
                 from /mnt/f/github/rt-thread/include/rtdef.h:68,
                 from /mnt/f/github/rt-thread/components/drivers/include/../../libc/compilers/common/include/dirent.h:1,
                 from /mnt/f/github/rt-thread/components/dfs/dfs_v2/include/dfs.h:19,
                 from /mnt/f/github/rt-thread/components/dfs/dfs_v2/include/dfs_file.h:15,
                 from /mnt/f/github/rt-thread/components/dfs/dfs_v2/src/dfs_file_mmap.c:10:
/mnt/f/github/rt-thread/libcpu/risc-v/common64/cpuport.h:30:10: error: expected ';' before 'void'
   30 | rt_inline void rt_hw_dsb(void)
  

你的解决方案是什么 (what is your solution)

请提供验证的bsp和config (provide the config and bsp)

• BSP:

• .config:

• action:

]

当前拉取/合并请求的状态 Intent for your PR

必须选择一项 Choose one (Mandatory):

• 本拉取/合并请求是一个草稿版本 This PR is for a code-review and is intended to get feedback
• 本拉取/合并请求是一个成熟版本 This PR is mature, and ready to be integrated into the repo

代码质量 Code Quality：

我在这个拉取/合并请求中已经考虑了 As part of this pull request, I've considered the following:

• 已经仔细查看过代码改动的对比 Already check the difference between PR and old code
• 代码风格正确，包括缩进空格，命名及其他风格 Style guide is adhered to, including spacing, naming and other styles
• 没有垃圾代码，代码尽量精简，不包含#if 0代码，不包含已经被注释了的代码 All redundant code is removed and cleaned up
• 所有变更均有原因及合理的，并且不会影响到其他软件组件代码或BSP All modifications are justified and not affect other components or BSP
• 对难懂代码均提供对应的注释 I've commented appropriately where code is tricky
• 代码是高质量的 Code in this PR is of high quality
• 已经使用formatting 等源码格式化工具确保格式符合RT-Thread代码规范 This PR complies with RT-Thread code specification
• 如果是新增bsp, 已经添加ci检查到.github/workflows/bsp_buildings.yml 详细请参考链接BSP自查