Bug 1001877

Description
ib700 watchdog device is not added in the guest correctly.

Version-Release number of selected component:
# rpm -qa libvirt virt-manager qemu-kvm
qemu-kvm-0.12.1.2-2.398.el6.x86_64
libvirt-0.10.2-23.el6.x86_64
virt-manager-0.9.0-19.el6.x86_64

How reproducible:
100%

steps:
1.A rhel6.4 guest exists and add ib700  watchdog device with reset action.
2.Boot the guest and check info of the watchdog device
# dmesg | grep ib700
# /sbin/lsmod | grep ib700

3. On the host #
# ps -ef | grep qemu
qemu      4313     1 80 05:59 ?        00:00:15 /usr/libexec/qemu-kvm -name r64 -S -M rhel6.5.0 -enable-kvm -m 1024 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid 7b04e67b-70d2-c5f1-17af-c0a31d3be7f2 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/r64.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive file=/var/lib/libvirt/images/kvm-rhel6.4-x86_64-raw.img,if=none,id=drive-ide0-0-0,format=raw,cache=none -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 -netdev tap,fd=27,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=52:54:00:42:be:7b,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -vnc 127.0.0.1:0 -vga cirrus -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device ib700,id=watchdog0 -watchdog-action reset -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5

Actual results:
step 2. No output for the commands.
And the bug also reproduce on rhel7.

Expected result:
Step2, Get the corresponding info of ib700 watchdog device.