!2926 Fixed some issues of ultrasoc-smb

Merge Pull Request from: @cj-xiaocai 
 
1) Fixed the BUG of atomic-sleep
Patch#1 coresight: ultrasoc-smb: Fix sleep while close preempt in enable_smb

2) Fixed uninitialized before use buf_hw_base
Patch#2 coresight: ultrasoc-smb: Config SMB buffer before register sink
Patch#3 coresight: ultrasoc-smb: Fix uninitialized before use buf_hw_base

https://gitee.com/openeuler/kernel/issues/I8ICOU 
 
Link:https://gitee.com/openeuler/kernel/pulls/2926

 

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