Description:fix libc(user&kernel) printf func

Team:OTHERS
Feature or Bugfix:Bugfix
Binary Source:NA
PrivateCode(Yes/No):No

Change-Id: I78d37cd46a65fcbac889e3be76ea6a4360e6e8a9
Reviewed-on: http://mgit-tm.rnd.huawei.com/10583123Tested-by: Npublic jenkins <public_jenkins@notesmail.huawei.com>
Reviewed-by: Nmaguangyao 00383488 <maguangyao@huawei.com>
Reviewed-by: Nzhushengle 00451061 <zhushengle@huawei.com>
Reviewed-by: Njianghan 00316535 <jianghan2@huawei.com>
Reviewed-by: Nshenwei 00579521 <denny.shenwei@huawei.com>