powerpc/kvm: Fix a uninitialized bug (Liu Yu)

Signed-off-by: Liu Yu <yu.liu@freescale.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6327 c046a42c-6fe2-441c-8c8c-71466251a162
