!9228 coresight: tmc-etf: Fix global-out-of-bounds in tmc_update_etf_buffer()

Merge Pull Request from: @ci-robot 
 
PR sync from: Chen Zhongjin <chenzhongjin@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/EA4HC76PKIAO35KZABQKCIIIOCALZLQP/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9R4FH 
 
Link:https://gitee.com/openeuler/kernel/pulls/9228

 

Reviewed-by: Ye Weihua <yeweihua4@huawei.com>
Reviewed-by: Xu Kuohai <xukuohai@huawei.com>
Reviewed-by: Liu YongQiang <liuyongqiang13@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>