fix missing DetectRocm() in FindSolutionsImpl(), where options = nullptr

[carlushuang]

This will fix SWDEV-404537

We people use miopenFindSolutoins() API with options = nullptr, will have GPU crash if MIOPEN_FIND_ENFORCE=4

The root cause is there is no workspace allocated while tuning, since when call GetWorkspace() every asm solver will return not applicable, but when launching the kernel they will return applicable, and run the kernel with nullptr workspace.
This PR fix this issue.

[atamazov]

Good as a hot fix!

@carlushuang Thanks for this finding. Can you propose some regression test (or just describe what needs to be done and in what order)?

[junliume]

Good as a hot fix!

@carlushuang Thanks for this finding. Can you propose some regression test (or just describe what needs to be done and in what order)?

@atamazov there is no good way of reproducing it in MIOpenDriver, actually it is not found when running migrtaphx-driver. Maybe there is a way to reproduce in Find 2.0 path @DrizztDoUrden ?

[carlushuang]

Agreed with Jun. MIOpenDriver has different code path to utilize internal APIs, in this case miopenFindSolutoins(options=nullptr) can only fire the bug.
@atamazov I guess just test the API level with options = nullptr and not nullptr?