[dpdk-test-report] |SUCCESS| pw63389 doc: introduce openwrt how-to guide

[0-day Robot]

From: robot at bytheb.org

Test-Label: travis-robot
Test-Status: SUCCESS
http://dpdk.org/patch/63389

_Travis build: passed_
Build URL: https://travis-ci.com/ovsrobot/dpdk/builds/138677818