Unfortunately can't post this in any of the boards except this one... but for those interested in trying to get a miner running on the Xeon Phi:
1) Download the opencl SDK from
http://software.intel.com/en-us/vcsource/tools/opencl-sdk-xe2) Download the cgminer source from GitHub:
https://github.com/ckolivas/cgminer3) Edit ocl.c and change all references of CL_DEVICE_TYPE_GPU to CL_DEVICE_TYPE_ACCELERATOR
There should be 5 of them. Without this change, it will build and try to run (will even show the devices found in debug output) but won't be able to get the device ids and will bail.
Performance with 4 vectors and a work of around 32 is pretty poor, around 20GH/s per card. Perhaps someone with more time and better knowledge of optimizing for the Xeon Phi can optimize this better and give back to the cgminer project. I'll try to dig into it more eventually as time permits.