virtio/pci: Register a single eventfd for vhost

Vhost supports a single eventfd as the kick mechanism. Registering a
second one will override the first. To ensure vhost works with our
virtio-pci, only register the kick eventfd that is used by the guest.

Fixes: a508ea95f954 ("virtio/pci: Use port I/O for configuration registers by default")
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
1 file changed