Introduce a test for ath3k hardware.

Change-Id: I42ca375473b0d36cde21d626495878b2d741d914
BUG=chrome-os-partner:273
TEST=see below

Build a test image and install it on an Andretti machine.
While in chroot on the development machine run the test as
follows:

./run_remote_tests.sh --board=x86-generic --remote=172.22.75.149 hardware_Ath3k

observe the results:

>>> Test results:
-----------------------------------
hardware_Ath3k                PASS
hardware_Ath3k/hardware_Ath3k PASS
-----------------------------------
Total PASS: 2/2 (100%)

Review URL: http://codereview.chromium.org/3157019
2 files changed