[HIPIFY][doc] Update README.md
[HIPIFY][doc] Update README.md

+ Populate Dependencies section with upcoming LLVM versions
+ Add clang bugs for not working configs LLVM+CUDA
+ Update Testing section

GPUOpen-ProfessionalCompute-Tools/HIP,GPUOpen-ProfessionalCompute-Tools/HIP,GPUOpen-ProfessionalCompute-Tools/HIP,ROCm-Developer-Tools/HIP,GPUOpen-ProfessionalCompute-Tools/HIP,ROCm-Developer-Tools/HIP,ROCm-Developer-Tools/HIP,ROCm-Developer-Tools/HIP,ROCm-Developer-Tools/HIP,GPUOpen-ProfessionalCompute-Tools/HIP