HIP_PLATFORM detection logic relied on finding a working KFD. If it was
found, the platform was set as hcc else as nvcc.
However this logic is flawed since it is possible for the development
system to only have the user mode bits to build HIP application code.
Hence the better logic is to rely on finding a suitable compiler.
The new logic is as follows:
- look for a working HCC. If found, platform is set as hcc.
- else look for a working NVCC. If found, platform is set as nvcc.
- else the platform defaults to hcc for now.
Change-Id: Ifcc42c29a19f722153d5c23c55f1a8765dceaf6b
[ROCm/hip commit: 8b25f7b4cf]
Maneesh Gupta
55da014b79