tree db8ce7ef8fa213550a4f6a08859a0e51edf198c1
parent de5365194a6316a6564757218b1a7f865dfef576
author YoungSeok Yoon <youngseokyoon@google.com> 1457044929 -0800
committer YoungSeok Yoon <youngseokyoon@google.com> 1459542005 -0700

devtools/madb: specify devices with their indices.

This allows users to specify devices with their devices indicies. For
example,

    madb -n=@1,@2 start

will only start the app on the first and second devices, and not on
the res.

Change-Id: I96573e50e5693e5ca5abbb7ad4b4d851ee33fa7b