OK so a few things i have noticed.
the drop in cgminer replacement works for antminers but the antminer section of the status screen id basically blank.

I know this is because the antminer driver is not compiled into to the cgminer binary

there is a patched version of the antminer software here
https://github.com/FireWalkerX/cgminer-bmsc

can someone please cross compile it for the beaglebone board and post a binary.

I do not have the experience required to do that

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UPDATE
If you use the newest BitMain firmware that contains cgminer 4.6 and then drop in the 4.7 replacement, all antminer status reports sections work properly.