add: generate csv files from device_names

Warning: It takes so long time to generate csv files. You can see following
reference to know how much time it takes.

moto_x: 3 min, 136403 items
lg_g2: 2.30 min, 123558 items
nexus_5: 24 min, 561858 items

it run on macbook pro(2010) with 12GB RAM. You need to care about your
computer's RAM size.