vmxnet3/base: disable some clang warnings
vmxnet3/base: disable some clang warnings

Signed-off-by: Bruce Richardson <66b9e8e8fbd5e9f41f91b0af050876182ce9d0e4@intel.com>
Tested-by: Zhaochen Zhan <475f889962aa79cd7d493abeeef9a908bf59d011@intel.com>

phermansson/dpdk,phermansson/dpdk,phermansson/dpdk,phermansson/dpdk