[HIPIFY] [FIX] replacement error: cudaError_t -> hipError_t_t
[HIPIFY] [FIX] replacement error: cudaError_t -> hipError_t_t

https://github.com/GPUOpen-ProfessionalCompute-Tools/HIP/issues/71

[Solution]
getUnqualifiedType for enumConstantDecl's type is added, except ordinary enum declarations (w/o typedef).

[ToDo]
Find more appropriate way of distinguishing redefined enum declarations and ordinary ones.

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