ROCm upgrade to clang-17

[Cordell Bloor <cgmb@slerp.xyz>]

Hi folks,

I'm still working on updating rocm-hipamd to use clang-17, but I think 
it's time to start the migration to unstable (as it will take a couple 
steps to reach HIP anyway). The CI results seem to indicate that 
everything should continue working, even as libraries like rocr-runtime 
get updated to be based on clang-17.

We're less than two weeks from getting dropped from testing due to the 
RC bug, and there's lots of libraries that will need to be rebuilt, so I 
think it's time to get moving.

Sincerely,
Cory Bloor