Delete '#' and use '0x' prefix instead

Signed-off-by: Yutao Ai <aiyutao@huawei.com>
Message-Id: <20201125014514.55562-4-aiyutao@huawei.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>