vmxnet3: add Rx check offloads
vmxnet3: add Rx check offloads

Only supports IPv4 so far.

Signed-off-by: Yong Wang <0cd1be787884a033c98e298059e386114d22793e@vmware.com>

mixja/dpdk,tsphillips/dpdk-fork,venkynv/dpdk-mirror,john-mcnamara-intel/dpdk,msune/dpdk,msune/dpdk,mixja/dpdk,john-mcnamara-intel/dpdk,mixja/dpdk,tsphillips/dpdk-fork,venkynv/dpdk-mirror,john-mcnamara-intel/dpdk,mixja/dpdk,venkynv/dpdk-mirror,john-mcnamara-intel/dpdk,venkynv/dpdk-mirror,tsphillips/dpdk-fork,msune/dpdk,msune/dpdk,tsphillips/dpdk-fork