[PATCH -next] integrity: Make function integrity_add_key() static

[Kees Cook]

On Wed, Feb 10, 2021 at 08:01:31AM +0000, Wei Yongjun wrote:
> The sparse tool complains as follows:
> 
> security/integrity/digsig.c:146:12: warning:
>  symbol 'integrity_add_key' was not declared. Should it be static?
> 
> This function is not used outside of digsig.c, so this
> commit marks it static.
> 
> Reported-by: Hulk Robot <hulkci at huawei.com>
> Signed-off-by: Wei Yongjun <weiyongjun1 at huawei.com>

Reviewed-by: Kees Cook <keescook at chromium.org>

-- 
Kees Cook