[split] BFI_INT from OpenCL

[IvanG]

i did not use clc. i use the GPU_DUMP_DEVICE_KERNEL environment variable. if defined it dumps the .il and the .isa when its execing a opencl kernel.

clc or OpenCL routines used -- doesn't matters as it ends in OpenCL C->IL->ISA chain compiling.
In theory you can also post-process generated kernels to replace required instructions with BFI_INT. I haven't take a look at OpenCL for a long time but I guess that binary images are the same as for CAL itself (received with calclCompile(), calclLink(), calclImageGetSize(), calclImageWrite() sequence) -- ELF binary with several sections. So process should be exactly the same as for CAL/IL kernels.