libvirt-qemu: Fix enum type declaration (cherry picked from commit 3ed18372a3531f7cd2ccb5a55f48744f8ace4916)
libvirt-qemu: Fix enum type declaration
(cherry picked from commit 3ed18372a3531f7cd2ccb5a55f48744f8ace4916)

Signed-off-by: Steve Hodgson <eb20a6615749cf04ff61aa37e18f749ed6d01446@solarflare.com>

sshah-solarflare/Libvirt-PCI-passthrough-,sshah-solarflare/Libvirt-PCI-passthrough-,sshah-solarflare/Libvirt-PCI-passthrough-,sshah-solarflare/Libvirt-PCI-passthrough-,sshah-solarflare/Libvirt-PCI-passthrough-