dpdk: enable RX for no-multi-seg
dpdk: enable RX for no-multi-seg

The option no-multi-seg doesn't take effect for RX since MTU
which is too large is passed to DPDK lib, Which causes PMDs
are running XXX_scattered_rx function. The patch fixes the issue.

Change-Id: I91a6fb23fd118e872c8a52a6c35c36a86cb2c02b
Signed-off-by: Zhiyong Yang <fbdb847fac8e5e50b588eb93d9ff9fd811b7568c@intel.com>

chrisy/vpp,chrisy/vpp,vpp-dev/vpp,FDio/vpp,FDio/vpp,FDio/vpp,vpp-dev/vpp,chrisy/vpp,chrisy/vpp,vpp-dev/vpp,vpp-dev/vpp,vpp-dev/vpp,FDio/vpp,vpp-dev/vpp,vpp-dev/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,FDio/vpp