--by-dna to pick a board errors

[CarlFK]

1 Atlys, 2 Opsis are plugged in.

juser@cnt3:~/temp$ hdmi2usb-mode-switch -v \
 --by-dna 01332dbbfc5b5aa0 \
 --flash-image image-gateware+bios+firmware.v0.0.4-144-gd11f5b8.opsis.hdmi2usb.lm32.bin

WARNING:root:unbind-helper not found, will have to run as root!
 Found exart-uarts at [LsusbDevice(04e2:1410:0003 /dev/bus/usb/002/123)] associating with Atlys at [Board(dev=LsusbDevice(1443:0007:0000 /dev/bus/usb/002/124), type='atlys', state='unconfigured')]
Numato Opsis in 'operational' mode at /dev/bus/usb/002/125
 /sys/bus/usb/devices/2-1.3.4
 /sys/bus/usb/devices/2-1.3.4:1.0
 /sys/bus/usb/devices/2-1.3.4:1.1
 /sys/bus/usb/devices/2-1.3.4:1.2
 /sys/bus/usb/devices/2-1.3.4:1.3
 Board is currently used by drivers ('cdc_acm', 'uvcvideo')
 Serial port at /dev/ttyACM0
Digilent Atlys in 'unconfigured' mode at /dev/bus/usb/002/124
 /sys/bus/usb/devices/2-1.3.3
 /sys/bus/usb/devices/2-1.3.3:1.0
 Serial port at /dev/ttyVIZ0
Numato Opsis in 'operational' mode at /dev/bus/usb/002/127
 /sys/bus/usb/devices/2-1.2
 /sys/bus/usb/devices/2-1.2:1.0
 /sys/bus/usb/devices/2-1.2:1.1
 /sys/bus/usb/devices/2-1.2:1.2
 /sys/bus/usb/devices/2-1.2:1.3
 Board is currently used by drivers ('uvcvideo', 'cdc_acm')
 Serial port at /dev/ttyACM1
args.all None
Traceback (most recent call last):
  File "/home/juser/.local/bin/hdmi2usb-mode-switch", line 11, in <module>
    load_entry_point('hdmi2usb.modeswitch', 'console_scripts', 'hdmi2usb-mode-switch')()
  File "/usr/local/lib/python3.5/dist-packages/hdmi2usb.modeswitch-0.post1-py3.5.egg/hdmi2usb/modeswitch/cli.py", line 287, in main
    assert len(found_boards) == 1, found_boards
AssertionError: [Board(dev=LsusbDevice(2a19:5442:0002 'ffffd88039680b42'), type='opsis', state='operational'), Board(dev=LsusbDevice(1443:0007:0000 /dev/bus/usb/002/124), type='atlys', state='unconfigured'), Board(dev=LsusbDevice(2a19:5442:0002 'ffffd88039680b41'), type='opsis', state='operational')]