[OLK-5.10] build error when CONFIG_KABI_RESERVE=n && CONFIG_KABI_SIZE_ALIGN_CHECKS=y

```
When CONFIG_KABI_RESERVE=n && CONFIG_KABI_SIZE_ALIGN_CHECKS=y, with kabi reserved padding replaced by KABI_USE(), we will get the build error:

In file included from /home/liwei/main_code/hulk/arch/x86/include/asm/thread_info.h:15,
                 from /home/liwei/main_code/hulk/include/linux/thread_bits.h:32,
                 from /home/liwei/main_code/hulk/include/linux/thread_info.h:14,
                 from /home/liwei/main_code/hulk/arch/x86/include/asm/preempt.h:7,
                 from /home/liwei/main_code/hulk/include/linux/preempt.h:78,
                 from /home/liwei/main_code/hulk/include/linux/spinlock.h:51,
                 from /home/liwei/main_code/hulk/include/linux/mmzone.h:8,
                 from /home/liwei/main_code/hulk/include/linux/gfp.h:6,
                 from /home/liwei/main_code/hulk/include/linux/slab.h:15,
                 from /home/liwei/main_code/hulk/include/linux/crypto.h:20,
                 from /home/liwei/main_code/hulk/arch/x86/kernel/asm-offsets.c:9:
/home/liwei/main_code/hulk/include/linux/kabi.h:383:3: error: static assertion failed: "include/linux/fs.h:2306: long aaa is larger than .  Disable CONFIG_KABI_SIZE_ALIGN_CHECKS if debugging."
   _Static_assert(sizeof(struct{_new;}) <= sizeof(struct{_orig;}), \
   ^~~~~~~~~~~~~~
/home/liwei/main_code/hulk/include/linux/kabi.h:405:3: note: in expansion of macro ‘__KABI_CHECK_SIZE_ALIGN’
   __KABI_CHECK_SIZE_ALIGN(_orig, _new);  \
   ^~~~~~~~~~~~~~~~~~~~~~~
/home/liwei/main_code/hulk/include/linux/kabi.h:416:37: note: in expansion of macro ‘_KABI_REPLACE’
 # define KABI_REPLACE(_orig, _new)  _KABI_REPLACE(_orig, _new);
                                     ^~~~~~~~~~~~~
/home/liwei/main_code/hulk/include/linux/kabi.h:437:29: note: in expansion of macro ‘KABI_REPLACE’
 # define KABI_USE(n, _new)  KABI_REPLACE(_KABI_RESERVE(n), _new)
                             ^~~~~~~~~~~~
/home/liwei/main_code/hulk/include/linux/fs.h:2306:2: note: in expansion of macro ‘KABI_USE’
  KABI_USE(1, long aaa)
  ^~~~~~~~
In file included from /home/liwei/main_code/hulk/arch/x86/include/asm/thread_info.h:15,
                 from /home/liwei/main_code/hulk/include/linux/thread_bits.h:32,
                 from /home/liwei/main_code/hulk/include/linux/thread_info.h:14,
                 from /home/liwei/main_code/hulk/arch/x86/include/asm/preempt.h:7,
                 from /home/liwei/main_code/hulk/include/linux/preempt.h:78,
                 from /home/liwei/main_code/hulk/include/linux/spinlock.h:51,
                 from /home/liwei/main_code/hulk/include/linux/mmzone.h:8,
                 from /home/liwei/main_code/hulk/include/linux/gfp.h:6,
                 from /home/liwei/main_code/hulk/include/linux/slab.h:15,
                 from /home/liwei/main_code/hulk/include/linux/crypto.h:20,
                 from /home/liwei/main_code/hulk/arch/x86/kernel/asm-offsets.c:9:
/home/liwei/main_code/hulk/include/linux/kabi.h:385:3: error: static assertion failed: "include/linux/fs.h:2306:  is not aligned the same as long aaa.  Disable CONFIG_KABI_SIZE_ALIGN_CHECKS if debugging."
   _Static_assert(__alignof__(struct{_new;}) <= __alignof__(struct{_orig;}), \
   ^~~~~~~~~~~~~~
/home/liwei/main_code/hulk/include/linux/kabi.h:405:3: note: in expansion of macro ‘__KABI_CHECK_SIZE_ALIGN’
   __KABI_CHECK_SIZE_ALIGN(_orig, _new);  \
   ^~~~~~~~~~~~~~~~~~~~~~~
/home/liwei/main_code/hulk/include/linux/kabi.h:416:37: note: in expansion of macro ‘_KABI_REPLACE’
 # define KABI_REPLACE(_orig, _new)  _KABI_REPLACE(_orig, _new);
                                     ^~~~~~~~~~~~~
/home/liwei/main_code/hulk/include/linux/kabi.h:437:29: note: in expansion of macro ‘KABI_REPLACE’
 # define KABI_USE(n, _new)  KABI_REPLACE(_KABI_RESERVE(n), _new)
                             ^~~~~~~~~~~~
/home/liwei/main_code/hulk/include/linux/fs.h:2306:2: note: in expansion of macro ‘KABI_USE’
  KABI_USE(1, long aaa)
  ^~~~~~~~
```

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