qemu-kvm: misc msix fixes

Here are two bug-fixes for MSI-X support in qemu-kvm. I bundled them together because the touch the same code.

Michael S. Tsirkin (2):
qemu-kvm: msix table update thinko fix
qemu-kvm: broken MSI routing work-around

 qemu-kvm.c |   34 +++++++++++++++++++++++++++++++---
 1 files changed, 31 insertions(+), 3 deletions(-)