hipMemcpy with hipamd pulls in full Comgr support

[d1saster]

Even compiling the simple square example, this obviously needs to use hipMemcpy.

However, I was kind of surprised that internally in hipMemcpy the BlitProgram is used which (in an OpenCL fashion) seems to be built on first use using the compiler manager, and thus requiring effectively a full llvm dependency. In particular the device libs need to be present (which was what made me even aware of this issue)

Doesn't this undermine the whole point of doing binary builds for each ISA in hipamd in the first place?

To reproduce the issue run

AMD_COMGR_SAVE_TEMPS=1 AMD_COMGR_REDIRECT_LOGS=stdout AMD_COMGR_EMIT_VERBOSE_LOGS=1 AMD_LOG_LEVEL=7 ./square

Ideally this should only happen if hiprtc is used.