!2437 crypto: drbg - Only fail when jent is unavailable in FIPS mode

Merge Pull Request from: @ci-robot 
 
PR sync from: Lu Jialin <lujialin4@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/NRCVGOWIEUCWFVNKU2CHXRRL3SVAW7UW/ 
 
https://gitee.com/openeuler/kernel/issues/I88MMY 
 
Link:https://gitee.com/openeuler/kernel/pulls/2437

 

Reviewed-by: Jialin Zhang <zhangjialin11@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>