I just made an image, gridseed supported.
Just write image it to 4gb sdcard, stick it into your pi, fire up. Miners should start automatically after you've entered mining pool.
Hope this helps.
I am sorry, first upload was bad.....
https://mega.co.nz/#!uZAGFI6S!xVhHZdNvGij2L6gJk_VXnaTewgr7gFjOjnOCTtO_HHUThanks to all from litecointalk, who made this possible.
Let me know if that works for you.
I tried your image, but for some reason scripta doesn't recognize my gridseed 5chip miners. Tried a whole hub of 10 pieces and a single one. Neither seems to work.