seccomp: Fix "cacheable" typo in comments

Do a trivial typo fix: s/cachable/cacheable/
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Cui GaoSheng <cuigaosheng1@huawei.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210331030724.84419-1-cuigaosheng1@huawei.com

kernel/seccomp.c

@@ -817,7 +817,7 @@ static void seccomp_cache_prepare_bitmap(struct seccomp_filter *sfilter,
 }
 
 /**
- * seccomp_cache_prepare - emulate the filter to find cachable syscalls
+ * seccomp_cache_prepare - emulate the filter to find cacheable syscalls
  * @sfilter: The seccomp filter
  *
  * Returns 0 if successful or -errno if error occurred.