* Enabled gcc for hip host code * Adding tests for hip code + (gcc & g++), without kernels * Excluding nvcc platforms for gcc and g++ tests + Addressing review comments * minor code clean-up * Add rocm include path * Added relative path for library * Hiding non supported functions for gcc * Incorporating review comments [ROCm/hip commit: 3bfff0a23d]
3bfff0a23d