Finishing the ROCm 6 update

[Cordell Bloor <cgmb@slerp.xyz>]

Hi guys,

We really need to get rocm-hipamd uploaded if we're going to have any 
chance of getting everything migrated to LLVM 18 before Trixie. I think 
it is still possible, and I am willing to make a big push to get there. 
However, it's going to require a fair number of sponsored uploads to get 
packages into NEW:

- src:rocm-hipamd (libamdhip64-6)
- src:rocm-llvm (rocm-device-libs-18)
- src:rocblas (librocblas4)
- src:hipblas (libhipblas1)
- src:rocsparse (librocsparse1)
- src:hipsparse (libhipsparse1)
- src:hiprand

There's already Mario, Xuanteng, and Christian working on the 
rocm-hipamd update, so I'm not going to wade into that. If you need my 
help, please let me know. Otherwise, I will focus on the dense linear 
algebra stack.

Sincerely,
Cory Bloor