[dpdk-dev] [TEST] lib/librte_pmd_vhost: Add vhost pmd

Addition: The patch was written just for testing vhost-user extension patches. So it has a lot of issues now. Thanks, Tetsuya

[dpdk-dev] [TEST] lib/librte_pmd_vhost: Add vhost pmd

The vhost pmd is a poll mode driver using librte_vhost library. It is almost similar to a relation between librte_ring and ring pmd. Here is a command example of QEMU(above 2.1) to communicate with the vhost pmd. qemu-system-x86_64 -M pc-1.0 -cpu host -m 4096 \ -object memory-backend-file