Try using UYVY before BGR24 in OpenCV

This would be better for us since we'll be converting to grayscale and
if it captures it in YUV, we can just take the luminance. If it's BGR24,
it'll take about 10 or so milliseconds to convert to grayscale.
Provide networking over OTG USB port

The static IP is 10.3.14.15. On a host usb0 (possibly after `modprobe
usbnet') should show up. After assigning an IP, setting up the route,
etc. you should be able to connect to the Gumstix even on boards that
don't have an ethernet or serial connection.
OpenCV force reading grayscale UYVY images

We'll be dealing with grayscale images, so no point in converting to
BGR24 and back to grayscale when we could just take the luma channel
directly from the camera after putting it in UYVY mode.