Description:Synchronize the Wi-Fi code and remove the hi3881 shell command.

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

Change-Id: I4293af341d1734620694dfb0ae4357dc1d6e9ec6
Reviewed-on: http://mgit-tm.rnd.huawei.com/11682395Reviewed-by: Nhouxuanzhe 00483167 <houxuanzhe@huawei.com>
Tested-by: Npublic jenkins <public_jenkins@notesmail.huawei.com>