Rocm Backend: Fix regex for detecting version in Linux

[DGdev91]

Hi, i'm trying out your library on my machine, but i can't use the ROCm backend on Linux
i'm using ArchLinux and rocm 6.0.2 (the version currently included in official arch repos)

The output from hipconfig is something like this:

HIP version  : 6.0.32831-

== hipconfig
HIP_PATH     : /opt/rocm
ROCM_PATH    : /opt/rocm
HIP_COMPILER : clang
HIP_PLATFORM : amd
HIP_RUNTIME  : rocclr
.......

...and so on.

As you can see HIP_PATH points to /opt/rocm, and it's not possible to find out rocm's version from there. but we can use the "HIP version" string just on top.

Also, the $ at the end makes the regex never match if there are other characters after the matched string, wich is not what we want.

I made a new regex wich takes the version from "HIP version"

also.... i'm not sure that checking just the major version is enough, but we can talk about that in another thread

[DarthAffe]

Hey, thanks for contributing.
that's interesting - the hipconfig output this is based on had shown the version in the path (but since I don't own a device on my own I just had to take what others sent me) - maybe there is a difference between distributions.
But this is a better solution and should work in all cases.

Checking only the major version should be fine (at least as far as I know there aren't breaking changes between minor versions)