smb/client: rename cifs_acl to smb_acl

Preparation for moving acl definitions to new common header file.

Use the following shell command to rename:

  find fs/smb/client -type f -exec sed -i \
    's/struct cifs_acl/struct smb_acl/g' {} +

Signed-off-by: ChenXiaoSong <chenxiaosong@kylinos.cn>
Reviewed-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>