anchao opened a new pull request, #7413:
URL: https://github.com/apache/incubator-nuttx/pull/7413
## Summary
arm/cache: fix build warning on LLVM clang
```
armv7-m/arm_cache.c:93:24: warning: unused function 'arm_clz'
[-Wunused-function]
static inline uint32_t arm_clz(unsigned int value)
^
```
Signed-off-by: chao an <anc...@xiaomi.com>
## Impact
## Testing
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