[Enhancement] - Add HPL random generator to gemm-flops with ROCm

[quge009]

What would you like to be added:
For GEMM-FLOPs test with ROCm, pass flags to rocblas-bench specify what random tensor generation is used.
--initialization rand_int
--initialization hpl

Why is this needed:
--initialization rand_int to use simple random tensor generation, which results relatively more 0 values
--initialization hpl to use HPL style random tensor generation, which results relatively less 0 values

Without this feature, how does current superbenchmark work：
more 0 values results better benchmark results, which is by default for ROCm before 5.1 release

Components that may involve changes:
GEMM-FLOPs

Brief description of your proposal if any:
reference:
https://github.com/ROCmSoftwarePlatform/rocBLAS/releases/tag/rocm-5.1.0
https://ontrack.amd.com/browse/MSRCHA-325
ROCm/rocBLAS@9e9ced4