!894 Fixed two accelerator bugfixes

Merge Pull Request from: @xiao_jiang_shui 
 
1、The accelerator queue parameter configuration is incorrect.
2、uacce: use filep->f_mapping to replace inode->i_mapping

issue: https://gitee.com/openeuler/kernel/issues/I79JRM
 
 
Link:https://gitee.com/openeuler/kernel/pulls/894

 

Reviewed-by: Yang Shen <shenyang39@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>