files/disable-tso : Fix wrong interface column

ip monitor link command returns interface name in second column not first.

    17: qvo5adabea0-9f: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master ovs-system state UP qlen 1000

it will returns 17 instead of qvo5adabea0-9f