drop the qemu_char_get_next_serial and use chardev prop instead
Signed-off-by: Nxiaoqiang zhao <zxq_yx_007@163.com>
Message-Id: <1464158344-12266-6-git-send-email-zxq_yx_007@163.com>
Tested-by: NMichael Walle <michael@walle.cc>
Acked-by: NMichael Walle <michael@walle.cc>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>